Supa Quick Mahikeng treated me like my life

So so angry with the treatment I got at Supa Quick Mahikeng! Went there for fitment of the front shock absorbers for my Corolla. The mechanic forgot to fasten the stabiliser. Noticed that after driving less than 10km from the shop. The response I got from them "It's a mistake, don't you ever make mistakes in your life?" When I tried to show them the seriousness of this matter that it could have resulted in an accident, the response was " that's why people have insurance" Sheer arrogance! We are only good when we bring money to them and make them rich but in return what do we get? "Black man you're on your own"