Account Handed to Lawyers After it was cancelled

I've been a tracker customer since 2010. My account came to an end in Jan 2015. Before then I received an SMS stating that my account was now going to be a month to month contract since the duration of the contract had elapsed. I called the call centre to advise that I will not be renewing the contract and may it please be terminated with immediate effect. I was then shocked when I saw that Tracker continued debiting my account. I advised my bank to put a stop to the debits. I then contacted tracker to let them know that my account keeps on being debited. after two months, this is April now, I got a call from a lady from tracker processing my cancellation. In the call she acknowledged my grievances and she advised that my account is terminated and that I will receive a letter confirming that. I haven't received the letter by the way. Last I got a call from Norton Attorneys saying that my account was handed over to them because I was owing money. I explained to them that I had cancelled months before. I then contacted the call centre and the gentleman who assisted was telling me that I owed money because my account was cancelled only in April. This is frustrating and annoying.