Vodacom debited extra - *******

I have 4 contracts, Vodacom removed without consent 2x the amount for December 2015. Instead of informing me, the customers of their mistake, I had to call in to find this out. So if you don't check your statement, they probably took from you as well, and if you don't enquire, they probably benefit from it.Today after calling twice ( 2 days ago and yesterday ) , I got an sms saying \ Vodacom will ensure that refunds and all associated bank charges are paid by C.O.B Monday at the EARLIEST. "Vodacom must also cover bounced debit order cost as a result of their mistake. Its my money and 4 days waiting for it is not acceptable this being the EARLIEST - sneaky ******s wont use the word LATEST in their communication"