Harassed my Debt Collectors from Vodacom

I had a contract with Vodacom which was cancelled on May 30, 2024. I have paid all the outstanding amounts that I owed. I had received an estimate for R647.51 and paid R365.00. I received confirmation from Vodacom that my contract has been cancelled and my number is now on pre-paid. However, I am being harassed by a company called VVM, which is calling me to collect money that I supposedly owe to Vodacom.

I have a confirmation letter from Vodacom stating that my contract has been cancelled. Can Vodacom please inform VVM that I do not owe them anything and request that they stop calling me? It is unfair that I am still receiving such phone calls when my account is settled with Vodacom.