Luxry car with a hole on the leather seat

I bough myself a luxury Mercedes Edition C, C200 from Avis car sale in April and I must say the service was disappointing. I really didn't feel like a customer but like I am being done a favour. Furthermore two days later after I got the car. I sent an email to Foster to tell him that I am unhappy with a few things. The most unacceptable was a hole on the leather passenger seat. He told me to bring the car in after not considering that i am not always in JHB and travel a lot. Eventually I made it to him. He complained about me not claiming this from the warranty. I found it strange because I told him about this immediately after the sale. let alone the cracked steering wheel cover and some part loose of the dashboard. He took pictures and told me he will call me and sort it out. After calling several times, he tell me I must bring it back because Tony he's manager will not fix it and wants to see it. I am so unhappy to a point that I must post my complaint here in the hope that they resolve it before I takeout up with my lawyers. It's been 7 month.