Bad service and charges for non-existent service

I made use of Autopage's additional data packages for a few months, but when I renewed my contract I decided to cancel this package, since the data part of my new contract would be enough.<br> Firstly - I could not cancel the add-on on their My.Account facility (where I selected to use it), I had to go to a store to have it done for me.<br> Secondly - The customer consultant at the store could not access my account at the time and promised to remove this facility from my account. This appeared to have been done, as the service was not billed on my March account.<br> Thirdly - Having just received my April account, I notice that the service is back on my account with the fee for April included, as well as a backdated month's fee for March.<br> <br> This is unacceptable. I am still paying for a service that I wanted stopped 2 months ago and that I have not received any benefit from. Also please do not offer a self-service facility where customers are invited to manage their accounts, but still need to go to a store to get things done.