I want to model a sub-process, where a request to a customer is sent, and a reply is expected within 7 days. It should loop 2 times (for 3 requests total). Only after the 3rd waiting period, the customer should receive a notice, that their application is rejected.
The diagram is originally in German, thus this is just a quick translation for context in the BPMN.

Is there a better way to do this?