Terrible Service

I called mercedes benz Wonderboom to come collect my car on a Sunday (07 May 2017) because i had a Tyre bust on my one of my Tyre's. All we and good the came to collect the car for repairs the next day which was on a Monday, then they called me to tell me that the brand(Dunlop Sport) was not in stock because that was the brand of Tyre's that i was already using or had, but in stock they had a different brand of the same size that they can also use.

I then agree to a different brand of the same size to be used (for the one trye that had bust) but i was advised that its best to change both Tyre's instead of one so they car can balance properly, then I agreed again and said they should put back my other Tyre inside the car that didn't have a problem so I can use it as a spare and they did exactly that.

Now when I went to collect my car they told me my Tyre that didn't have a problem was placed back inside my car, all well and good it was there. When I got home I checked the Tyre only to find that it was the one with a bust and not the one that didn't have a problem.

I then went back to Mercedes benz Wonderboom to tell them about this, and they went look and said they could not find the Tyre (Dunlop Sport) , they then sent me to the Service Manager Vikki McClean and she said to me they will look for it and then call me.

She then called me once in June 2017 to tell me that they have forgotten about my case and That they are still looking.

3 months has passed now and still nothing and we approaching the fourth month. I called them today 23 August 2017 and I went through to the reception and i held on to the phone so they can put me trough the Service Manager but no luck.

Please help me! My Car registration (DS 73 WC GP) Cell no: ********** 421

Thank you in advance!