Vodacom - Accounts

I moved my number from my husbands account to my own account, end of March both debit orders still went of his account, we went to Vodacom shop and rectified the mistake and we even went to back 1 week before the April Debit order, just to make sure all was ok, and accordingto the lady that helped us, everything was perfect, on the 26 April my husbands account was debited, this time only for his contract, the debit order never went off my account end of April, 2 weeks later when after logging this issue with the lady that assisted us, someone phones us from accounts department, saying account will be debited by end of May, with an amount, not even appearing on the contract, we have agreed with, then another call was logged due this problem, today (23 May) another lady spoke to me and my husband and now the account is going to be debited for 2 months, after i have begged for this to be sorted and not for a double amount to be debited, Vodacom told me, dont worry, we will pay you for the bounce back of the debit order and then you can make arrangements to pay the outstanding amount over a few months. I dont want that to happen! So for the past 2 months its a mission to sort out 1 account, with the correct debit order. Not sure what is going to happen end of this month.