MTN - *****alent Behaviour - Unacceptable standards for recourse

Contacted by a consultant on the 30th of September 2025 @ approximately 8:50am to sell me upgrades. At no point did I approve or agree to any upgrade. Literally 2 minutes after ending the call i received sms's and email confirmation that my contract upgrade was approved. I then immediately contacted MTN ***** department and to my amazement they had zero control or authority to undo or cancel anything that was done as it was a 3rd party that made the sale. This is truly unacceptable as for me as a consumer my dealings are with MTN and for them not been able to immediately assist is the service levels I expect.