summit tyres dangereous work

I have been to summit tyres cason rd boksburg north a few times the last two times the machanical work has been bad I send an email the last time they didn't even answer this time the calaphers where not tightened on the front wheels an there wher bolts missing from the brake disc they are the only people that have worked on the car during the past year - the machanics obviously don't konw what they are doing and the non tightening of the caliphers could have resulted in a serious accident - my daughter was there a few months ago and then they tighten her bolts so tight that she had to pay a lot of money for that damage to be repaired - she didn't complain to them because it doesn't help at all - theprevious time their machanic put the wrong brake pads on my jetta and I was just a call away - summit tyres should not be doing work that envolving wheels and they are a danger to the drivers of the vehicles and they should not be allowed to do any kind of machanical work at all