Trapped IN AN ACCOUNT!!!!!

I took out a cell c account 2 years ago that expired on the 22 September. I called them prior to ensure that they cancel the account since I will be moving overseas. The lady told me that she cannot cancel it till it was up to date. I paid what was owed to them and called once more to ensure that it was cancelled. The lady, Natalie (I think) she told me that I needed to pay an additional R69 in order for the contract to be cancelled. I paid the money and for the 3rd time called to ensure that the contract was cancelled. This time, she said no, they will debt my account. 1. I told you that I am moving overseas on the 28 September. So there will be no account to debit from. No one can tell me how much I owe so that I can make a manual payment.