Accident built… total damage? What now??

Hello together, I built an accident on Tuesday morning. I missed a car, then slipped and someone took the lead. The woman got into the side with her polo (directly at the height of the front axle). Insurance takes care of everything. Car is at my Audi dealer and the expert was there today. I phoned the Audi dealer today. That meant then you have to wait and see what the expert for numbers brings. He said if the repair costs more than 7-8000 euro is not sure if you can fix it. Can that be? I think the A3 Sportback (112,000km, 170 hp, S-Line optics and interior) is still worth 13.-15,000 euro. Can the insurance then say that you can’t fix it anymore?? Can it be if the expert estimates my car at say 10,000 euro that I will only get the money, although I want to repair my car?? Am very unsure at the moment, because I was very satisfied with the car and it is still for 3 years I’m sorry. I’m sorry.