Tracker *****ing my money through debit orders 10 months after I cancelled!

Tracker has been *****ing money from me for the last 10 months despite me having called them on 12 august 2020 at 12:39 to cancel my subscription, which they duly confirmed to me on the phone. To my horror upon inspecting my bank statements last week, I saw that the Tracker debit order was still going off 10 months later. One wonders if they do this to everyone who tries to cancel. I submitted a query on their website on Thursday 10 June asking them what was going on, and unsurprisingly no one has even bothered to respond. I need a full refund of all the debit orders since August 2020 they have been ********ly taking from me. I even have a screenshot of the call I made to their call centre on 12 august 2020 which lasted 7 min and 45 seconds.