Uselessness of call center as cant speak to correct people to sort problem out.

Uselessness of there call center to other departments don't work. I keep logging calls in regards to credit due to me since last year for a product incorrectly sold to me through Rewardsco/Mondo. Took 10 months to finally stop billing me for it, now 18months later im still waiting for the refund. When I call the call center and ask that someone from the finance department contact me so they can tell me why no refund yet, all i get is a day later is my ticket call log is closed. No response no reason no nothing. When I phone again, all i get form the call center is it says no refund due.

This all done with in the required period. Yet I was still billed and every month when i phone the various call centers to sort it out. All I get is sorry sir, its been escalated.

This is pretty pathetic from a big company like MTN. Its over R2000 refund due to me, yet no one can call me to tell me what the problem is. Is this to much to ask.