Misleading Advertising with Samsung S6 Offer

I just signed a new 2 year upgrade contract. Part of the MTN promotion was a 1GB data per month for free for the first 3 months with my Samsung S6. I do not see it on my upgraded account but I do see the new package details. I have been a loyal customer of MTN for 20 years now since 1996 and have upgraded 7 times now with the same number for MTN. This is the kind of service I get.<br> <br> I find this service unacceptable, promising promotions in your magazines but when you sign up the contract, you don't get it. I received an SMS stating I will get 1GB free for 3 days but your promotion says 1GB per month free for 3 months. I tried getting help from the MTN branch I signed up with but no luck. Please assist urgently.<br>