MTN SELL PEOPLE LIES

I got a call in September from MTN about upgrading, and I liked the product I was told that I will get 28gig 14 daytime data, and 14 nighttime, But to my surprise on the 1st of October I got only 4gig, and I was told that I will get it on the 12th of every month as the old one, but I want MTN to be exposed on lying to us as customers and I want them to cancel the product cos it's not what i agree about