MTN has the worst service ever!!!!!!!!!!!

the lady that sold me the Home Premium 35Mbps Uncapped only said i will be paying the R632.90 which i did and then today my account was debited with an additional R509.84 and there wasnt any funds available

the problem that i am is she wasnt honest about the **** that she is selling the network gave endless problems and i cancelled the service took the rooter back to the store and now im struggling to get my money back - MTN is the worst never ever ever again