poor service

Hello Peter I took my Hyundai i20 on 02/12/15 for repairs as I met an accident, I informed them that I need the car ASAP and I also told them that I was going to buy the parts myself but that didn't go so well as the owner wanted to do everything and charge me more but we ended up agreeing on Labour fees only so I bought the parts and I was told the car will be fixed on Monday the 14th of current month but the car wasn't fixed I was told to come the next day and still it wasn't fixed I was told to come back on Friday 18th but still the car wasn't fixed then I was told to come on Saturday the 19th I stayed at the workshop the whole day and no one even touched my car. The way I see it owner Mr Maphumulo doesn't care about customer experience he only cares about fast cash the cars that comes for services are his priority only when there's no cars he attends my car, please can you help me and let me be the last victim