Appalling Elite Mobile upgrade ****

Sharlene from Elite mobile called on behalf of Vodacom offering me an upgrade to a contract I’m on, which I politely refused and even explained how couldn’t possibly need more data as I was now using WiFi more. She then went on to upgrade the contract DESPITE the refusal and I only realised this when Vodacom debited a higher premium. Since then it has been a mission and a half to reverse this and Sharlene , that started this whole thing hasn’t even offered an apology or a solution to resolve this matter!