Tracker cancelled 6months ago but debit order still going through

I cancelled my tracker with Netstar in November 2021 and received an email confirming that the Cancellation has been made. In Dec the debit order went through and I assumed that it will stop in Januaury 2022. But to my surprise the debit order is still going through. Even in June 2022 I received confirmation that the debit order went through.

Now what am I paying for when I am not even using the tracker? I mean the tracker was cancelled and a letter stating the Cancellation was received. This is not fair to me and I need my money to be refunded back to me and the Cancellation be made from Netstars side.