Vodacom horrible experience

Unauthorized upgrade has been made to my Vodacom contract without my knowledge or consent.

I recently discovered that my contract was upgraded, and I am now being billed for a service that I did not approve. I did not give Vodacom any verbal, written, or digital authorization for this upgrade. This action constitutes a violation of my consumer rights under the Consumer Protection Act (CPA), Act 68 of 2008, which requires explicit consent for any changes to a consumer contract.

Provide proof of my authorization for this upgrade (such as a signed document or voice recording).