unwilling to change bank details

I'm trying to change back details. I went into the store and they refuse to change my banking details as they need a bank account. That back account is no longer active.. The banks are closed and i refuse to spend more of my time to try and and change my details. Why do I need a bank Statement when it's my account and the phone call is recorded. In want someone with since intelligence to call me back so I can change my banking details before my next debit order. I will take this matter forward to the consumer act. I spoke to an unhelpful person mentioned above