Incorrectly Debited No Refund almost 4 Weeks later

I was incorrectly Debited on the 31st of May 2015 for a Cellphone Contract which I had canceled on the 8th of April and made full settlement payments for. (When I made the settlement payment, I forwarded proof of payment). I notified Cell C about the mistake and almost 4 weeks later, still no refund! Every time I call them they promise to get their Claims / Accounts Department to call me back within an hour and they never do, its been week now and I am still waiting for a call which i should have received within a hour according to them! I DON'T WANT TO TALK TO ANYBODY, I JUST WANT MY MONEY BACK!!! YOU DIDN'T TALK TO ME WHEN YOU TOOK MY MONEY FROM MY ACCOUNT, YOU JUST TOOK IT AND MADE ME INCUR BANK CHARGES!! I WANT ALL MY OUTSTANDING CREDIT BALANCES PAID INTO MY ACCOUNT AND MY BANK CHARGES PAID BY CELL C!! Which in my opinion is indeed the MOST USELESS NETWORK PROVIDER EVER!!! That's why i cancelled all my contracts with CELL C! I will never again use Cell C, and I will encourage others i know to do like wise!