Cancellation not processed

My Telkom mobile contract expired at the end of October 2015 and I sent though the cancellation in early October to prevent the contract from rolling over to month-to-month. Nothing has happened and I have been billed in Nov, Dec and Jan. <br> <br> No one can help and all that happens is the calls get routed to teams who do nothing. Most useless billing and accounts company I have ever worked with. My advice to all consumers AVOID TELKOM LIKE the PLAGUE. They will tkae your money for no service.