Very Bad service received from Brandon in Used Cars Sales

Very bad service form Quinton in Used Car Sales. Quinton is unhelpful with my complaints listed. There was a list of stuff needed to be done on the used Kia we bought before collection- we gave him extra days to have it done, only to discover it was not done when we arrived at the dealer to collect the Kia. He was still running around to get a spare wheel fitted to the bakkie. Central locking that was promised was not installed as promised, service was not done. He wasted my day - it took me from 8am till 13h00 to take delivery of the Kia. After delivery I picked up more problems on Kia. Kia is pulling to the side, radio not working and few other problems. I sent Quinton an email and he ignored my email. After my wife called him he claimed that I sent emails to his work colleagues, but the email address I used was provided by Quinton. I have been struggling for almost a month to get a proper answer from him I am fed up to struggle with Quinton and need some assistance from his manager to get my Kia sorted!!!