Poor service from Rain SA

my name is Takalani Muneri. I had a subscription with rain from 02 Feb 2022 until 05 Dec 2022 after making a full payment on the 01 Dec 2022. I then started having problems with regard to network because I moved to a new apartment .I phoned rain to inform the network problem and I gave them my new residence address to register in order to solve the network ,unfortunately they didn't fix my network problem, I then phoned and told them to cancel my subscription with immediate effect. The call agent i spoke to did informed me that my subscription is cancelled and that i don't have to make any further payments because I already paid for December .To my surprise on the 24th of December till today rain has been trying to make debit from my account. I Don't understand because i don't owe them anything and my subscription was cancelled. I am writing to you today to please help me resolve this matter. Because I don't want it to affect my credit because i an still seeking employment.