Invoices are redundant

My account has been suspended for over a month now and I have received an invoice that states that I have been using data and making calls whereas I have not been using my phone. Amounts were debited from the previous month of which I HAVE PAID FOR. They still reflect on this month's invoice as outstanding amounts and the money that I have to pay at the end of the month is ridiculous. When I took the decision to cancel my contract with the service provider their cancellations department never responded to any of my requests. When I called the call center department they told me that someone called me and I said I do no want to cancel my contract anymore of which I never received a call from anyone to ask me about my cancellation. I believe that Telkom has ****** me since the day that I decided to take a contract with them, their call center agents say different things when you inquire about the same problem, The sales consultants at the store just don't know how to explain what the issue really is when you tell them about the problems you have been inquiring.

All the money I have spent so far I could've bought myself the latest iPhone CASH AND BOUGHT CELL C DATA THAT WOULD LAST ME A YEAR!!!!!!!!!!