Poor service and customer relations by Car Service City Horizon view

On the 26 th February(Friday) I took my car vw Polo vivo Maxx for a major service at Car Service City Horizon View, they serviced the car I paid R4971 they charged me with no hustle they told me the car is good condition they said I should only buy Shock mounting . I got my car back on the same day(Friday), I found that they didn't reset it bcoz there was still a spanner on the odometer reading I asked them why there's still a spanner in the reading? they failed to to give me a reasonable answer , they only said they can remove it on Monday coz they are closing and it will take them time to remove it and they want go home, then I drove my car on Saturday and Sunday around 3pm while I was driving the car I saw an orange ABS light on , in the odometer my car began to make funny things when I hit the brakes everytime I approach a stop sign or traffic lights .On the following Monday morning I took it back to Horizon view to find out what happened They said I must replace the speed light sensor of which I did .I had to pay again R1282 again including labour of one hour R450 for the work that takes less than 15 minutes . I was ripped off cash . I drove the car for less than two days the same Problem occurred again I had to take my car again to Benoni lakeside Car service City they were Shocked to discover that I'm experiencing such a difficulty they tried to help by diagnosing my vehicle and they gave me a report on their findings and they said I must take it back to the horizon view car Service city . I'm frustrated by such a poor service , I have spent R7000 on the car that I'm not enjoying to drive . I want my money back so that I can take my car elsewhere , where I will not be ********** my hard earned cash by manager who doesn't care about his customers but he only care about reaching his target for the day .Yesterday I asked him a question about why am I paying a labour costs of an hour for the work that lasts for less than 30 minutes ? he couldn't answer me . I will not be ********** my hard earned cash . I want my money back or I will take this issue further . Who will replace my petrol I have spent going there to listen their lousy excuses and poor workmanship. I just want my cash back