Unable to cancel - No feedback or assistance

I have called the accounts department upon which they had advised that I needed to send a cancellation form to [Email Removed] I had duly completed the document and sent it on. After which I had waited as was expected for the cancellation period to expire (eg a month). When I received a new bill I called accounts , spoke to another lady - who handled herself very well considering I was livid - and she said I sent it to the wrong mailbox. <br> <br> I then sent another cancellation to [Email Removed] and contrary to their response, I did not receive a call within 48 -72 hours. Nor was there any other indication that there is any intention of processing it. <br> <br> I had sent another email again after seeing I received another bill and added interest, as calling people and speaking to accounts gets you nowhere. As I have to assume I didn't submit all information - seeing as there is absolutely no feedback or contact from them. All this happens while I am expected to keep on paying for something I had cancelled in October.