Continued billing with no resolution despite efforts to cancel

I took a special SAGE package with included the Payroll Subscription, but I do not use it. The following year I only paid for the SAGE One Subscription and did not renew the Payroll Subscription. However, SAGE continues to bill. When replying to the statement; I receive notification that the mail box is unattended and I have to go to the website and enter my SITE number; I tried this but it didn't work. I called SAGE directly and I got transferred from Sales to Finance with no resolution and then a consultant eventually dops the phone on me to get rid of me. This call lasted 60 minutes long. I am also not given a case reference number when calling SAGE so there is no management overview or follow up on the case.