Debiting of cancelled contract!

Possibly the WORST cellphone provider to deal with. Their customer service (or lack of service) agents are grossly lacking in expertise and service. Personally went into Vodacom to cancel a contract that had run its course and to switch to prepaid. This was done months ago!!! Yet they continued to debit my bank account for the contract. Phoned Vodacom and went through the entire cancellation process again and was assured it was cancelled, BUT ONCE AGAIN they debited for this contract that has twice been cancelled!! Get your act together, Vodacom! You are pathetic!