MARCH TO SEPTEMBER, SOMEONE PLEASE HELP !!!

So another week has passed and my issue with Autopage has still not been resolved, my request to cancel my contract in March has still not been dealt with, and Autopage are still deducting the incorrect premium from my account - and if that is not bad enough, they are yet to contact me as they promised they would (after I logged a complaint on Hello Peter), 6 months has passed and I am yet to get any statement or invoice from them, they simply just deduct from your account whatever they feel to be relevant. I have complained on Hello Peter 3 - 4 weeks ago after not getting any joy from their call centre, they simply do not respond - I need to escalate this to the relevant people !!! What is the next step ? A consultant named Patience sent me an e-mail saying she had a look at the account and they billed me correctly ? how can that be, if something is cancelled how do you still bill for that, contract expired in Feb and was cancelled in March, how do you still debit for the following 6 months? This has got to be the worst customer experience ever !! 6 months to simply cancel an expired contract ?