Dismal Service from Tracker

I am appalled by the absolutely poor customer service. I noticed a year ago that I was being debited double my initial premium. When I queried this, an extremely rude consultant told me I was also paying for the insurance on the unit, which I don't recall asking for. However I asked her to cancel the insurance & continue with just the premium, but to provide written confirmation of our conversation. I received nothing so I stopped the debit order. I continued to received messages stating I am in arrears (the totals being the incorrect amounts). Now I receive a message I've been handed over to legal. I cannot get hold of the said legal nor can I reach Tracker. I sent an email to cancel my subscription with detailed reasons & in return I'm told my account was cancelled in October 2019 as per my request, no apologies, no attempt to remedy the inconvenience. So if my account was cancelled last year, why am I owing Tracker anything!! Absolute ******* service and your staff need customer-centric training!!!