Bad service

i purchased a bmw m3 at vw merlrose arch 08 august 2019 car was sold to me by storm after taking the delivery of the car the car had a missing water light spay cover missing which he advised that it was missing from bmw sandton (wich bmw sandton agreed to fix it) after the q/a well from the there results of the q/a of the vehicle had windscreen was not good for use (mind you i was only sent this one page out of the full report of the vehicle from bmw sandton)which i then requested him(storm) to fix it and a tow hook and inner panels for front fender which he agreed that he will fix it in no time ..i requested him to deliver the car with the quality report check from bmw which he didn't ..well from there he delivered the car to me and the car after taking delivery of it the first time when i was driving it ..it started loosing power and vibrating then immediately took the car in to them remember i only had the car for like 2 days + ever since i took it back i have been dealing with him(storm ) bradley and vleis which is the dealer there i have been waiting for three weeks without the car was advised that it was sent to sandton for repairs which again it took years and years for them to authorize the car to be fixed which i then decided to visit them in their branch so that they can give bmw authorization mind you each and everyday i am follow up with them no one is calling me (but when i went there within 2 mins everything was sealed and authorization was given) and i have been struggling with transport since they took my only car that i bought for use so literally i bought a car and had it for like two days and i am paying for something that i am not using and it is so inconvenience for the last three weeks how long does it take for a dealer to fix so all i want is too terminate this contract since i didn't even had the car for two days ..i have sent emails and millions of what sap messages and calls can you help me get my car back or terminate my contract today i requested them to give me another car that i can use while they are busy with my car they advised that they dont have anything i mean how dare they sold me **** the next thing they dont even fix it i am spending a lot of money paying installment on a car that i dont even have can you help resolve this matter actually everyone knows me in the whole department...so all i want is my car fixed or contract terminated since theres always new stories everyday pushing the days i will be happy if you can resolve my problem and attend to it as a matter of urgent