Horrible customer service

I went to Hyundai Midrand to buy break pads for my i20 on Friday the 29th of April 2016. I called my mechanic on Saturday to come replace my brakes, after taking out the wheels he discovered that the brake that I had bought were wrong and I had to pay guy for work done on the car. I went back on Tuesday to exchange the brake pads and I was told they were out of stock but they will order for me. I was told to come back the next day to come collect the brake pads. I asked my mechanic to use his car instead of using public transport to go to work so that he can come to my place after work to replace the brake pads. I went to collect the brake pads and I was told they haven't arrived yet and I told Patric that I have already lost money due to him giving the wrong parts and I have to pay my mechanic again for his time, and he said he will get someone to replace them for me at no cost to me the next day. He called me this morning to say the parts have arrived and I can bring in the car. I took the car in around 8:30 in the morning and I just fetched my car now and the brake were never replaced. I took the brake pads and left. The customer service I received was horrible