Contract debit

I took a cellphone contract with vodacom which ended in November 2022. Last vodacom continued to debit and today I got an invoice saying they will deduct again end of January. Today I called and I was told that I was supposed to call and cancel the contract. I was never told when I took the contract that I need to call in order to cancel the contract. Vodacom customer service is on 0. The lady I spoke to gave an email address of the people that offered me the contract. They called me and told me I need to called the account people again. No one is talking sense but my money is gone is they still want to debit more🚮 Out of 10 I rate them a 0 because I never missed a day of paying but they enjoying to debit my money.