8th time NOT lucky!

I have been asking since April for my debit order to be changed. July is now the 4th month that you have debited the wrong bank account after promising me 6 times it was done. Megan Sodom (call center agent) and Keenan Van Der Speck (Manager) blatently **** to me on the 3rd July assuring me it was changed. It has not been changed. Virgin Active is now impacing my credit rating and score because of returned debit order. Kindly escalate to higher management than Keenan as clearly he is as ineffective as the call centre agents I have spoken to! I await your urgent feedback.