False advertising

I’m really disappointed with the service I’m receiving from this company. I took a contract last year during their Black Friday special deals where I would get a phone for X amount and would receive 25GB for 6 months for free. To this day I have not received the 25GB and every time I call I’m told I need to go to the outlet that initiated the contract. I have been there and was told there’s nothing wrong in their side. MTN opened a query, never resolved it and when I call I’m told to go back to the outlet.

I just don’t understand how many times will I need to go back to resolve this. It’s really annoying to be made to get into a contract and expect something and not get it. This is against my consumer rights.