CELL C

I had a contract with cell c in 2015 then then the contract ended in 2016 an agent call me wanted me to renew it and have a data sim card and I greed but I waited for the sim for a month still didn't receive it I ended up taking a a data contract with Vodacom witch was delivered within a week. And my problem started, I call cell c let them know that I didn't receive the sim card and I cancel the sim card because I have no use for it anymore since I already have with Vodacom they agree to cancel the contract which was March 2018 but till to date they continue deducting money form my account I have been in their shop in Riverside mall Nelspruit several time for them to cancel the contract still no help now I don't know what to do this people have been taking my money for 2 years for a sim card that I don't have I told them check their record for them see that the air time its never been used and the lady told me that she will log the claim and she will transfer me to their head office I hold for 2 hours with no help now I dot know what to do I just want Cell C to pay back all the money that was deducted to me from 2017 to date and for them to cancel the contract