Vodacom

I took a 24 Months cellphone contract with Vodacom starting on 2022-01-04 and was supposed to end on 2024-01-03. I was shocked when they continued to bill me even though the contract has come to an end. I made numerous calls to them informing them about the issue, including the 30 days notice for cancellation of the contract. Their agents have been telling me that the matter has been resolved but I continue to get billings from them. I was left with no choice but to cancel their debit orders as I believe that their debit orders are not authorized as per the agreed contract. However, this has negatively affected my credit score. Vodacom has even threatened to block my phone and sim yet I've paid the agreed amount till the last date of the contract. I believe that this is an unfair treatment from the service provider.