Continuous Debit of Ex-client's Account Despite Cancellations as Served!

Car Tracker ...thrives on ignoring cancellation notices, by Debiting for No Service rendered In August 2022, I notified CarTracker that due to my elderly status and doing limited driving (reduced risk), as well as limited income, I cancelled their service. However, despite the mutual agreement of cancellation reached, the company in question has simply ignored our agreement. It continues with monthly debits, doubling and trippling them at times. No matter how many times I keep on reminding them, all of my efforts are ignored. If this is not bullying by Co against the elderly citizen, than I do not know better!