Worse service from Vodacom

I'm dissatisfied with the treatment I am receiving from Vodacom. Last month I took a Vodacom contract in one of their partners IPhone. Then few days before my payday they debited my account without an agreement with me and it was returned. I disputed the returned debit order and I settled the amount to rectify my name. Few days later they sent me demand sm to pay for a return debit order,of which it was their fault. Now they tell me that my account is flagged because I am in areas with them. I am not pleased at all. This is pathetic!!!

Regards