Rewardsco Sales Representatives unprofessional

Good day. I'm totally unaware of an upgrade that was processed without my approval. I'm highly furious with RewardsCo Sales representatives who called my grandfather, as his mental capacity is of nature that he cannot make financial decisions by himself anymore. The sales representatives are highly unprofessional and they take advantage of the elderly generation. I request the recording between the Sales rep who had called my grandfather. If I don't receive it, I will he taking this further. I demand the recording and don't tell me to contact MTN. Rewardsco upgraded an uncapped data deal with an 5GB data bundle deal. I request the recording to be sent via email as I'd like to hear the conversation and send it to ********** Please don't tell me to contact MTN to sort it out. Its Rewardsco responsibility to sort this out ASAP as MTN has nothing to do with the upgrade. ********** 415