Shocking Service - Telkom!!!

Telkom charged me R299 when i opened my mobile contract in January 2018, their explanation was - to see if my debit order works, and then promised to refund it within 3 months. It is now 6 months later and after a few 100 phone calls to call centre, holding on for hours on end, speaking to at least 4 supervisors, sending countless emails - with no one EVER calling back or responding to emails - i have had no refund. The worst is that every time i speak to an agent - they have a different story about why I have not received it yet - so much so that the case has been "closed/resolved" twice - from their side - with absolutely no resolution. I am at my wits end - and just wonder how many other people they do this to - people who do not take the time to call and query and go through these frustrations, and therefore Telkom would pocket all these R299's?? The most shocking service I have EVER experienced and cannot wait till my contract has expired so that I never have to hear the word Telkom again.