STOP billing me and CANCEL my account

I was always very happy with their service but never have i signed any type of contract with them and as i understand is that you pay before for the month of usage.. so since the start i used to pay around the 25th of each month. In december i had a bit of a delayed payment which was as following 28/12/2023 - R369.50 02/01/2024 - R369.50 After that i have tried many times to get them to cancel my service and stop trying to debit my account. Today again on the 28th of February 2024 I have spent more that 2 hours on the line with 5 different people who keeps on telling me i have to settle my account before they can cancel my subscription.. This is being straight up ******** !!! i have never signed any type of contract with you and at the end of desember i have made the last payment for what i was using. I am no longer interested in your service but you now want to bill me for January and February.. Also trying to debit from my bank account when i have never allowed Rain to do this!