VODACOM UPGRADED MY PHONE WITHOUT MY PERMISSION

Vodacom:I have complained since March 21 about being automatically upgraded for a U-Choose Flexi 65 contract without my participating in the upgrade for a 25 year old Nokia cell phone used by a relation who cannot use an Android or a modern cell and who cannot use a computer. This family member can only dial 1 number on this old phone and I would never in a million years upgrade this Nokia phone. I kept getting told that someone is dealing with my complaint and will come back to me but nobody does. I was told that I upgraded by calling Vodacom and as there is no call log on any of my cells. I have repeatedly requested a copy of the telephone call ( I have even asked them to send it to my nearest Vodacom Branch) but they do not respond.