Worst service, shoddy repair work

Vehicle was with them for three months after am accident, finaly they let us know the repair is done, all is well, got to the panelshop, parts were not lining up, Santos areanged to repair it quickly (5min) we left with the vehicle went home, next day the vehicle would not start and the passanger door window made a noise when opening, phoned them, they advised to bring the vehicle back today, had to put the battery charger on the vehicle yesterday as something is now draining tje battery, they said they fixed tbe window can't open it because they replaced the smash and grab, so will have to confirm if it has indeed been replaced? I asked if they sorted out whatever is draining the baterry, Santos pulled uo his shoulders and said it's the battery and not my problem, this is a vehicle that is two years old with 20 000km on it, never had any issue before getting it back from them, I will also be laying a formal comolaint with Outsurance. This is rediculous that we just have to accept whatever poor service and bad attitude a service provider is giving