False advertising!

Very Disappointed!! I bought my car in July from The Dome and the dekra report showed that the car had no engine faults or any major faults! I drove the car 3 weeks and it had already had major problems even worse the tires were in a very bad condition (I didn't realize because they swapped them) in front it had 1 new and same as the back!!! I told them and they said it will be sorted even now!!!!! I have already spent 12k in this car and they have been promising to get back to me it's been 3 months Nothing!!!! I'm returning their vehicle I want nothing to do with them anymore!!!