Still debiting my account after I canceled!

I wanted to cancel and then Shay from Dotsure phoned me and offered me a better price with a 15% discount. This discount was however never app****. Then Liam phoned me to confirm what Shay just offered me, just to send me a co tract with the exact amount without applying the discount. I didn’t want to deal with the hassle so I asked for it to be canceled. Have not received a reply from anyone. Then someone phoned me and I said I don’t want to deal with it, please just proceed to cancel. Again no email response from anyone after that. I assumed this was now done with. Surprise surprise they are still now debuting my account after I rejected the debi check and after I specifically asked for this to be canceled. Your communication from staff not replying is the absolute worse!! Cancel my policy!! I don’t know how or where to tell you this anymore!!