Help, they’re trying to pull me over the table!

Hello, I had a driving accident recently and the question of guilt is clear: I drove up there too late braked… why is now a minor matter. The fact is, however, that the impact speed was so minimal, that neither on my (Mercedes W124) nor on the vehicle of the opponent of the accident (Golf3) there was any visible damage. We have of course exchanged insurance cards address etc., but unfortunately I did not call a police. To show the vehicle to an expert and then contact me. I for my part reported the accident the same evening of my insurance where I was told that there was nothing going on in my description…. the whole was at the beginning of July. Today I get a call from my insurance company that the type of then for the reperture, painting and installation of the new bumper demands a rich 850€ (cost estimate). I don’t need to mention here that It is obvious that it is a fraud. I am now supposed to face my car to the expert and the accident opponent in order to clarify the matter…. However, the accident opponent has sold his car to a commercial used car dealer and compatriot (Turkey?) who has also made the estimate. So that this is a fraud is probably clear, my question now how to react to it…. to avoid a classification of the SF. It is doc h The task of insurance to uncover fraud cases and to file a criminal complaint or do I have to take it into my own hands? Above all, what are my chances of taking such an ominous opinion? Who has experience with such tricks and can give me tips what to consider? I thank you already in advance for all those who will help me willingly! mfG