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AI agents for disputed invoice follow-ups
Short answer
When a client withholds payment until a complaint is resolved, an AI agent links the invoice with the client's message and the support ticket. The finance employee sees what the client is waiting for and gets a draft question for the person handling the complaint in place of another reminder. The agent costs from €3,000 net at Syntalith and, with 60 disputed cases a month at 60 minutes each, pays back in 2.1 months.
How we workDetails ↓
- 01Call30 minutes with an engineer, free
- 02PrototypeA working system on your process and data, free
- 03ImplementationTarget and fixed price in the contract; 50% at signing
- 04Acceptance50% once the agreed target is met
- net per agent for one process, build paid once
- from €3,000
- from signing the contract to acceptance
- 6–16 weeks
- free prototype on your cases
- €0
We belong to the OpenAI and Anthropic partner programmes and learn through their official courses. What this means ↓
Author: Syntalith · 3 min read
Statistics
Receivables in EU companies: statistics 2026
2.1 mo.
payback of a €3,000 agent with 60 disputed cases a month: €2,094 of work today, €631 with checking and the model. Scenario.
52%
According to the EU Payment Observatory (2025), 52% of European companies faced problems due to late payments in 2024.
9.85 h
According to the EU Payment Observatory (2025), companies spend on average 9.85 hours a week chasing late payments.
1 in 4
According to the European Commission (2023), late payments cause one in four bankruptcies in the EU.
Source: European Commission, EU Payment Observatory (2023) ↗
90%
According to the European Commission (2026), 90% of companies that use AI say people take the decisions, and 2% of decisions are fully automated.
Source: European Commission, Flash Eurobarometer on AI and algorithmic management (2026) ↗
Figures checked: 22 October 2026
What has to be clarified before the next contact
After the service was delivered, the client did not receive the agreed documentation. They filed a complaint and wrote that they are withholding payment of the invoice until it is resolved. Support is waiting for a document from the delivery team. Meanwhile finance sees an overdue invoice, and the next reminder ignores what the client wrote.
In a shared view, the employee sees the invoice next to the client's message and the ticket. The agent prepares a question for the person handling the complaint: has delivery already handed over the document, and if not, when will it? The answer completes the description of the case. Whether the client has received it remains the key point, because the internal explanation may be ready while the client is still waiting. The employee checks and sends the messages, and the assessment of the complaint and the handling of the receivable stay with the company.
- 01Invoiceamount, due date and payment status
- 02Reasonthe client's message about withholding payment
- 03Complaintthe ticket and the person handling it
- 04Questiona draft to support about the state of the explanation
- 05Callfinance and the account manager know what to tell the client
- It does not judge whether the complaint is justified
- It sends no reminders on a case marked as disputed
- It does not set settlement terms or agree a settlement
- It does not contact the client without an employee's decision
What it costs and when it pays back
- Today
- 60 disputed cases × 60 min = 60 h (€2,094)
- With the system, a person checks the output in 30% of the time
- €628
- Model, 3 calls per case, Claude Sonnet 5.5
- €3
- Cost of one case
- €34.90 today, €10.52 with the system
- Saving
- €1,463 a month
Payback of €3,000
2.1 months
The volume, the time and the checking share are the scenario's assumptions. €34.90 an hour is the EU average hourly labour cost for 2025 according to Eurostat. Model: 6,000 input and 700 output tokens per call at Anthropic's rates, converted at the ECB rate of 1.1205 USD per euro on 22 October 2026.
The count covers the work around a case: searching, reading, writing and passing things on. What remains is the time to check the output, 30% of today's work in the scenario. Before the quote we measure both times on 20 to 100 cases the team has already handled, in a €0 test that takes 5 working days.
According to the EU Payment Observatory (2025), 52% of European companies faced problems due to late payments in 2024. Some of these are disputed cases, where a reminder with no answer to the complaint only lengthens the time to payment.
Check what your finance system already shows
Ready-made finance systems often have a receivables view that links transactions, cases and activities. If the invoice shows a current ticket and it is clear who is resolving it, configuring the view or a rule that routes a disputed case to the responsible person is enough. The agent is useful when the information sits in free-form correspondence: the client writes an email, support answers in a separate thread, and finance has to understand what is missing. The article on receivables monitoring covers tracking due dates and reminders.
The ticket sits on the invoice
configuration of the receivables view
no build
Disputed cases reach the wrong person
a rule that routes disputed cases
configuration
The reason for the dispute is in free-form correspondence
an agent that links the invoice with the complaint
from €3,000
Where to start
We start with one team and one type of service complaint. Usefulness shows in whether the person preparing the call understands why payment is being withheld. The team can also practise this work first in team AI training. We build this as part of AI agents. For the free process review, a description of one case from recent weeks and the tools it ran through is enough. You do not need to send confidential documents, and you get a written plan within 2 working days.
Worked example · Scenario
How we count the payback: receivables
We run the same count for your cases in the free process review.
€1,396
a month for preparing 300 receivable cases by hand
Payback: 2.5 mo.
8 minutes per case before a reminder and checking in 15% of the old time are our assumptions. €34.90 an hour is the EU average hourly labour cost for 2025 according to Eurostat, for companies with 10 or more employees. Model cost: 0.015652 USD per reminder draft with a separate tone check, measured in our receivables system, at the ECB rate of 1.1205 USD per euro on 22 October 2026. The payback counts saved time only. A reminder that goes out on time also recovers invoices that would otherwise go to an external agency or be written off, and we count that on your receivables during the review.
See the full calculation →