Billing a closed Acc

I took out a contract on /4/2015 , i had submitted the account with active bank details until i needed to change my bank details. i came to the toaki branch twice with the correct documents to change the account details to bill on my vodacom acc. iu have sat on calls trying to sort this out to no avail. its a uchoose smart type account and i would like someone to call me to sort this out.<br> <br> to date you have failed to load the correct account details onto the system and when you try debit order the old account it doesnt go through. please can a manager or a representative that will sort this out please get in contact with me. <br> <br> Contact person Inge wallace