MTN - Once again *********** the poor.

Once again I am having the same issue with MTN as in the past... This is the worst ****ing company to do business with. I am beyond ****ed off! On the 11th of March, I cancelled my contract for my number ***, which was due for renewal in January already. I have confirmation of cancellation, even an e-mail stating that I am now on prepaid.....but still they went and debited my account this month... and to top it off, they debited an even bigger amount than was the contract amount. This is ****ing pathetic.....absolutely no customer service what so ever. I want my money refunded today, or I will reverse all my payments for the past 6 months. It is unacceptable that you think you can get away with this. I am convinced that they do this intentionally, and hope that people will just let it go. I will not let it go, I will put it on every public platform what it is that you are about! Bunch of *******.