Can't leave zero stars. Picked up my new Q7 530pm ...

Can't leave zero stars. Picked up my new Q7 530pm Friday September 18th. 30 minutes later I was broken down on the side of the road with electrical system failure. Battery completely dead. Audi assist arranged tow truck to return my car to them. They received the car on the following Monday. I got a call to tell me the fault was with the MHEV and it would be replaced and ready by Thursday. Friday they called to say they replaced it but the problem remained and now needed an alternator. Would be ready Tuesday, today. I called to find out if it's ready only to be told now it will be Thursday. So if it is ready, the first two weeks of ownership of my new Q7 has been spent in the service centre. I am extremely disappointed and angry. I am regretting the purchase and have zero confidence with the car now. In any other industry the faulty product would be replaced on the spot. But for some reason we are expected to be without our product whilst they guess what the fault is by trial and error. Meanwhile I still have to pay the finance company for something I don't have.