Query not attended

Veronica Smith contacted me and asked for proof of payment of which I gave her and she said they cannot see the reference number from their side when I asked isn't a way they can check on the day of the transfer money from my bank . she later said MTN gave me 90 rands of which I didn't' receive, I responded to her on Friday that I haven't received anything from MTN. She hasn't'contacted and today is Monday to tell what is the way forward. I'm not happy with MTN. On saturday I bought data , once I was done with the process a message popped saying service is temporarily unavailable when i checked my balance my money was taken , I contacted MTN and spoke to Thabile who said i shgould call after an hour or two . I called from saturday until sunday and I coulndt get through the call centre, becuase the number was not available. I really dont know what to do anymore , Can MTN please refund me my money and I will port to another service provider as they dont care about their customers.