My car was fixed and It looks horible

After my accident I was advised to take my car in for repairs. My car was at the repair shop for a month and a half. I got my car back on the Saturday afternoon. That evening the cars main headlights and the airbags didn't work. Also we noted the car was not lining up. I took it back and they said they forgot to reset the computer box. That afternoon I realised the reverse sensors wasn't working. I then took the car to Audi Menlyn. They referred me to an Audi approved panel beater. I took the car there and they gave me a quotation to get the car as it should be. It came to over R21 000.00.. The panel beater told me they would what they can but it is because Hollard said the must use generic parts that nothing lines up and it looks they way it does. I then took this up with them and kept being told the assessor will get back to me. My car has now been there over 2 weeks again. Without a car again, and no Idea if my car will ever look the same. Why hasn't my car been to an Audi approved vendor. Why is my car still like it was an accident. Why was generic parts then used if it causes problems. When will it be fixed. THIS leaves a very bad taste in the mouth for someone who pays