Telkom mobile is refusing to refund my money

I have extra paid Telkom mobile by R1845 end of August 2017. I have dealt with different call centre agents every single since then and all I get is the same answer " you will get your refund within 72 hours. The first case I opened was closed after 3 weeks because one agent called me and ddnt find me and he closed the case. When I called asked they what is the final decision because I havent recieved the refund. They opened another ********** and I was promised I will get the refund with 72hours of which took another 2 weeks until one agent told me that he cant pick up on the system.I had to open a new case last week ********** 0. Its been 3 months now with no refund and this back and forth is a problem. Telkom pls refund me before I take further steps.

REGARDS ZONDI