Review of GENIE GAUTENG

I took my car to Hyundai Centurion for fixing on Wednesday, paid R2100 and the problems arise again on Sunday & took it to Bryanston cos I was nearer to them. I'm disappointed that I was charged R4500 regardless of proof of payment I gave them from Centurion. They said rats ate injector wires but never parked the car ever since I took it from Centurion (Uber). Please help me out, stressed out!