One horror story is when a customer took their car to a repair shop for a simple brake job. The mechanic overcharged them by doubling the price of the parts and adding unnecessary labor charges. When the customer questioned it, the mechanic was rude and refused to explain clearly.
There was a case where a customer brought their luxury car in for a paint touch - up. The auto repair shop used cheap paint that started to peel off within a month. When the customer demanded a refund or a proper fix, the shop owner said it was the customer's fault for not taking proper care of the car, which was completely untrue as the customer had followed all the post - repair instructions carefully.