Rains Appalling Customer Service & Continuous Debits on my account after cancellation

Rain keeps debiting my account after cancellation of Sim Card & confirmation thereof. They double debited my account last month and my bank was unable to reverse it, I have countless tickets from their useless “support” department and no one has ever gotten back to me. When I logged in today it shows that my next debit is on the 25th of Jan 2022 and yet Sim was cancelled 2/3 months ago and THERE IS NO WAY FOR ME TO REMOVE MY BANKING DETAILS WHICH I’M SURE IS ILEGAL!!

We left rain because of their weak signal after months of supporting their business. Their customer service is appalling and leaves very little to be desired.

I need assistance in the cancellation of their service, removal of my account details from their system and a REFUND of my money after not using their service for months!!!!