Where do I turn for help?

9th February Wayne at Vodacom Mimosa Mall Bloemfontein logged my problem. for over ten years my bill is steady for calls and data, roughly one and a half to two thousand per month. Suddenly I am getting bills for over ten thousand rand a month just for data. He sent the complain thru to "someone'. a week later i was told that although the large amount would be deducted from my bank account it would probably be reversed later. I explained as a pensioner that would wipe out my account leaving me nothing for food. he vetoed my idea of cancelling the debit order. I called again this morning to be told that they could not give out any details of who "they or someone" are who attend problems.