Still havent changed account details

<p>I took out a legal policy with FNB a few months ago. I told them the day I took it to debit money out of my savings account, yet I have seen they deduct money out of my Cheque account that has no money in as Im trying to close the account Now FNB charges me R138 for unsuccsefull collection and i have called the department for my policy to change the account details and i see they still have not changed my account details. Please assist in changing my account debit order and arrange to refund me the R138 as I have told FNB legal to update my details twice</p>