poor service and promises

I recently purchased a 2017 BMW 520D from S4 Auto in Boksburg via a salesman named Yusuf Gori. First they got the docs wrong by registering the car with wesbank as an F10 (old Shape) instead of a G30 (new shape). it was quite a process getting the corrections made. Then I was asked to sign off the delivery receipt form for wesbank in order for S4 to get their money. I indicated to two people at S4 including Yusuf that I am concerned about a vibration on the car and thus not happy to sign off until that was seen to. Promises were made by Yusuf about him sorting out any issues I have but please can I sign the form in the meantime. I was thus asked to lie in order to get the form submitted, stating that the car meets my entire satisfaction. The car has been to BMW for an inspection and the issue is buckled rims which S4 committed to repair. I am still waiting. I realise car dealerships often don't practice integrity so one has to be extra vigilant. If you decide to buy from S4 be careful and deal with somebody other than Yusuf Gori.