Rude Service Manager/poor customer service

I brought my car for repairs on /about 30th August. The gearbox light was on and the car was sluggish when put on 1st gear during stops. I was charged R 10 000 for the repairs. Two days later, the car was still presenting same problems. This time they alleged that I never told them that the car was sluggish. Nothing was done. On a third occasion and about two weeks later, I was now told by the Service Manager, Jan , who had an attitude, that I need to fit megatronics at R50 000. After a test drive and a 2hour wait, The service consultant told me they fitted new software from Germany and this was going to solve the problem. <br> On the 27th September, we went on a family trip to Durban and about 300km down, the car started doing the same thing. I called the dealer principal , Hayley the next day to arrange for for further diagnosis. As I write this complaint, the Dealership refuses to take responsibility for any of their bad workmanship, but they are also not prepared to assist. We have to pay for diagnosis, transporting the car back to JHB and Audi The Glen has decided that the R 10 000 we paid was worth nothing.<br> I do not think I will buy another Audi, thank you Jan and Hayley.