WORST SERVICE! JUST AFTER OUR MONEY!

I Struggled for moths to cancel my Subscription with rain. I have been sending communication since Jan 2023 for cancellation however they continued debiting me. The only way for me to stop this was to go to the bank and change my card so that they wont be able to deduct. I still paid for February and finally they collected their router. A year and six months later I receive a call that I owe Rain????? what is this? This must be resolved ASAP as it will negatively affect my credit! I shouldn't be receiving calls about this. I have a reference number for my cancellation!