Debit off the wrong account

we moved our account from my private account to the company account. I contacted Vodacom to check where they will debit July's bill from. they confirmed it will be from the Company's account. But it still went off my private account and there was no funds. I tried to contact vodacom to fix the problem and get re-reimbursed for my debit order charges, but after the 4th attempt to speak to somone, I have lost my patience. If your problem seem to difficult, they just put you on hold or cut you off. Does vodacom just employ people to answer the phones or do they have skilled staff that can deal with issues that Vodacom created in the first place.