Bad service from Nomawethu

Bad service from the call centre lady called Nomawethu. I always rated Finchoice number 1 when it comes to their online application. Today they debited my account after I have settled the loan. When I call the call centre I am told that i accepted the T&C's that time when i took a loan and I signed that they will debit my account on the 17th even if the 20th is on a Monday. So for me to get a refund i am told that i must go & get a proof of payment which they can see from their side that it was debited & dat it was settled. I asked if they will pay me my money for getting proof of payment and the lady failed to answer me, which she then started being rude to me telling me that there is no way they will give me money for the proof of payment because i took a loan with them & i signed for those T&C's. Which i then asked where did i sign regarding them debiting my account after being settled. Which she failed to answer up until i asked for the superior and she proudly told me that she is working from home and there is no way that i can speak to the manager because Manager of Finchoice dont talk to clients and she is also working for Finchoice and not any other company.