Customer Service

I took a contract out 2 years ago. My contract came to an end last year. November 2021 i called vodacom , they offered me another contract of R55 a month to let me keep my contract and I had until January 2022 to cancel that contract if I wanted to. The same day I took the contract I decided to call them and tell them I dont want it , they told me it takes 3 days to get it reversed... everyday up until today they keep telling me its being reversed and im still being billed a R55. Need advice advice please ????