Investment Auto four ways

I purchased a BMW 330i Convertible on the 26th of June 2018, from Byron Mace who's a head of wholesale division, Since I took delivery of the car on the same date, I picked up that the car had few problems, like the remote key won't close the windows when outside of the vehicle, secondly the car has a delayed starting habit during the day and it smokes and lastly the car is unstable on the road. On the day of delivery Mr Byron Himself promised me that they will fix what ever is wrong with car for the next six months, at first I struggled to get them to send me the car papers so I can get the car licensed on my province, the temporary disc they issued had expired on July the 11th, they only sent it August 10th with the spare key and no car manuals and service book. I reported the car problems with the garage to Veronica F&I lady who is handling the warranty claims on the garage on the 12th of July 2018, I was instructed to take the car for a check up which I did, I took the car to Pinnacle BMW on the 16th of July 2018 where they diagnosed and quoted, but when I wanted them to fix the car, I had no warranty details from her and she told me not to take the car to BMW but any other RMI registered garage, and then later sent me the warranty details and I took the car to 2 separate garages and chose the cheapest of them, Now my problem is that they are not responding to my emails about the quote the garage sent me, I speak to Byron last time was on the 21st August he sends mail to every one but nobody responds the car has been with the repairer 2 weeks now they waiting for a go ahead from them or me now Iam stuck without a car I'm paying for Monthly and the garage storage fey that is accumulating now I don't know what to do..

Please help I need this car fixed and payed for

Thank you

Mduduzi Mahlangu: ********** ********** 729 Byron Mace: ********** 146 Investment Auto four ways : ********** ********** **********