vodacom and being hurtful

i cancelled my “month to month “ data contract with Vodacom..I sent them an email! that was in december 2022…January they debited from my account! i consulted them via email and i received a call from them …they told me that i signed up for 24months contract!! so if i want to cancel their contract,i have to pay penalty fee of R4000!…i told them that i didn’t sign up for 24 months contract..I signed up for month to month contract!..i did the contract online and through phone call! they told me that they will get back to me and they never did ! every month they keep on debiting and i keep on reversing debit order because they are not attending my issue! i know if affects my credit score !! all thanks to vodacom!!!! i cannot even go to their store to ask for help ! because i am disabled! i am on a wheelchair,i cannot walk ! ..if this is how they treat people with disability …i really don’t recommend vodacom to anyone!!untill today ! my matter has not be attended to ! and the last time i used their data sim card it was last year december! but they are still debiting up to today !!!!can someone help poor me to deal with vodacom