2014 BMW 435 I

I took my car into BMW service recently because my rear view camera wasn’t working properly. I left it there for 2 days. On day 2 I get a call telling me that me that upon inspection of the car they found that I have a broken front axle and suspension! They say it must have been cause by a pothole. The car, besides the camera, was running fine. I didn’t have any trouble with the handling or performance at all. Is it possible that I hit a pothole and I wouldn’t have known I caused this damage or is something fishy going on?