My mother's hearing aid had a minor repair (when it happened before, it was $25 to 35 to fix it) so it was taken to the hearing aid center. They sent it off and then dropped the bomb on us that we owed them $600 for the repair. They completely rebuilt the hearing aid and did not bother to notify us. No one signed off on the repair, so now they have the hearing aid, since my mom could not afford to pay this. She was very upset to hear about the amount of money they wanted since the aid seemed to be working fine. What kind of recourse do we have? I feel that she was really taken advantage of, and being at Christmas it's even worse. I am having to shout to tell her anything - which is adding to stress.