Bad Car Service

I took my Toyota Auris to Halfway Toyota Honeydew for a service towards the end of march. When it came back there was an oil leak. I took the car back to them, they told me that I must take it to the panel beaters since the car was in an accident. The problem I have with this explanation was why there was no oil leak since I collected the car from the panel beaters from December until now. At the same time I ask them to perform some services on the parts that they recommended I have to fix. The second time I collected the car, the handbrake light was on, the head lights and the radio stopped working, and the oil leak problem was still there. I took the car back again to them and they pointed a finger on the panel beater, but all those features were working correctly when I collected the car from the panel beater. I decided to take the car to the panel beaters. They took the car for about four days and after diagnosing the car, they decided that all the mechanical or electrical problem was not their fault. I then decided to book the car again to halfway Toyota honeydew. They failed to even fix the handbrake lights, they point to other problems on the car. I wanted them to fix the car to a state which it was before I took it to them not to make it worse. I don't recommend any one to take their vehicles to this dealer, because when they can't fix a problem they find someone to point their finger to. Even if they are the one who introduce or created that fault