Delay in cancellation of contract

Tracker was given more than 30 days notice for cancellation of an account. I was supposed to have received confirmation within 72 hours but it has been 8 days and still no confirmation. When I called in, the woman that took my call could not assist with anything. She informed me that the turn-around time has changed to 7 days and I must wait, and that my next debit order will be processed because the account is still active. I have given adequate notice. I will not be held liable for Trackers incompetence. I followed the rules as set out by Tracker. My husband has also given notice of cancellation and is experiencing the same problem. He has also give me authority on the account but that apparently means nothing because every time I call to enquire the useless call centre agents deny me access before actually checking on their system. Apparently the system has not been updated but they have received all emails so it takes time for them to swift through everything. Surely, there are people employed to update data. We need those contracts cancelled and we will not be held liable for any further charges due to Trackers incompetence.