Sales/Fibre/Complaints Department - No help

I took a fibre package on advice of a sales consultant who indicated that 1 of my data contracts would be canceled at no extra costs to me. After the installation I have not heard from the consultant (Mandisa Khanyile). I have made numerous follow-ups telephonically even via email and was bounced around from sales to fibre and cancellations. As it stands, I owe Vodacom R1500 of which I am liable to due to the agent committing Vodacom and leading me to purchase fibre under the direction that my data contract could be cancelled. I sent an official complain vial email to Vodacom on the 4th of July copying the agent, and 2 follow-ups and til today I have not heard from them.