RIPPED OF ON REPAIRS

I took my car in to Techno car in albert street jhb to have the breaks done.I was quoted a price of R2444.16, However the price changed 3 times and it eventually ended up at nearly R4000.00. I collected my car and the brakes were stuill not right . I sent an eamil to Daniel who arranged for my car to be picked up from my house to be checked. However they cahrged me an additional amount of R823.00 to sort out the brakes.When i questioned Daniel as to why i need to pay again he said they hadnt check the other side and that i was liable for payment.To top it for every part that they remove or reolace they charge R500.00 so there charge are even more than the cost of the spares.I feel that they take advantage of women drivers. I drive a 1.4 ford cortina and the spare are really cheap. I can not uunderstand how they would charge R5000.00 only for brakes