Call centre transfer my call without listen to my

I e-mail Old mutual to change my bank details. No feedback I received and their did change and still go ands deduct money to wrong account.<br> <br> I called them today the call centre lady she didn't want to listen to my request and tell me that she can help me.<br> <br> If their don't assist by changing my bank details tonight bank month end of March I will left with no choose but to cancel the two products.