Explain why a bill went up, from the customer's own usage
Last updated 13 October 2026
A customer asks why their bill is higher. Rendel reads the bill and the usage from your API and answers with the difference, the items that caused it, and what they can change.
From the customer's own data
The figures come from your API, so the answer is about this customer's bill, not a help article about bills in general.
In Kestrel, a demo app
Asked: “Why is my bill higher this month?”
Answered: Your October bill is €53.40, €18.00 more than in September, because of calls to Germany and roaming in Greece.
Questions
Can it change their plan?
If you give it a plan-change action, yes, after the customer confirms on a card.