Debited Account Before Agreed Date

This was a first time experience trying to contact your queries dep and it was an absolute disaster. I spent 2 hrs on the phone trying to get through to your queries dep and still no luck. I was given 9 different telephone no's to contact and told to ask reception to transfer me to the correct ext. The more I told each call centre operator that calls are directly directed to call centre there is not recp. the more I was told about a new telephone system / can't be transferred they in a other building. besides be sent from pillar to pillar I was also cut off several time's. It's been a nightmare trying to get through to your queries dep for your mistake caused on my account. Debit attempts were made before the agreed date which has affected my rating with you and affect my bank risk. My profile indicates my acc being in arrears without as the debit order was submitted on the 25th Feb and not 26 Feb as agreed not being the first time this has happened. I want this to be correct as you've received the funds as required after a second attempt to debit my account.