Uber: I’m in shock after being charged a £60 cleaning fee

I wasn’t given any details of an alleged incident involving mustardAfter an uneventful 19-minute Uber journey, I was shocked to be charged a £60 cleaning fee for what appeared (in a photo) to be mustard on the car’s rear seat and inside the door. I was not provided with a description of the incident or the time the photo was taken, and it is not possible to see the car registration. It was even suggested the incident was serious. Uber is doing nothing to refund me. SS, London S