What next?

In December 2016, Vodacom decided to take a Christmas bonus and double deduct my account. They then sent a sms stating they made an error and would pay the extra deduction back as well as any costs incurred. When this didn't happen, because my account was in a negative, as I only keep my in that account for my debit orders, i called to query it. I was told to fax my bank statement to the accounts department adn that they'd sort it out. to date I still await feedback. Then in Feb I changed bank accounts, called Vodacom and told them, I also mentioned that my debit order needs to change, as I now get paid on the last working day. This month when i checked my account I'm being billed for late charges, yet an instruction was given for the money to be dedcuted a day after the last working day. and I also picked up another charge for'instant recharge\ which I cant seem to understand, as my number is blocked, because the phone was ******. so how is this all happening adn i can't seem to get anyone to give me any answers, unless I complain on this site??"