Why are you debiting my account for services that I'm not using????????

Rain keeps on debiting my account even after I've canceled my subscription and gave them enough notice for my cancelation. The lady who handled my query, Millicent assured me that the plan was canceled and that the router would be collected, I have that on email too. She informed me that since my service will end 30 November 2021,December 2021 would be my last installment as payment was collected in arrears. What I don't understand is why my account was debited in January 2022 and February 2022. I've made several calls, emailed them but no one seems to want to assist me. I need to understand why I'm paying for services I'm not using????? The last consultant whom I spoke to even checked to see when last my my internet service was active and it showed 30 November 2021 but did nothing about it. It really feels like a **** and I've lost confidence in Rain and will never recommend their service to anyone. With that said I want my money back because to me this is theft. Also it took them forever to collect the router, telling me about courier backlogs. The Level of unprofessionalism is insane. Very very disappointing with their service. But I will say it again I want my money back!!!!!!!!!!!!!