Debiting Wrong Account

Hi <br> <br> I've been requesting that TFG update my banking details since June as I have changed banks. Money is still debited from the old account and this requires me to go to the store every time to settle my account which could be done if they debited on the wrong account.<br> <br> I've sent numerous emails but I never get a response from them. Their call center and stores will tell you that you have to do this via email which you never get any response from in any case..<br> <br> Please sort this out as it is really inconveniencing for me as a customer and it is leaving a sour taste in my mouth in terms of the service provided by TFG for their customers.