MTN Stop Reaping People off on the contracts they signed that's cheating

Ref No: N*** (contract ending with 6327)

MTN, i signed a contract to purchase 90 Gigs of data. Suddenly i get 40 gigs on a monthly basis. what is amazing is in the 1st few months of that contract i used to get my data as i have subscribed then suddenly i only get 40 gigs credited to my account. even when i use that data at 12pm it still takes from my actual data so there is no night or day data difference all you are doing is to reap off your clients. i have been a client with your network for more then 20 years but now i feel like i am getting enough and would not be reluctant to change. The reason i decided to buy a package with that much data was buying it on pre-paid was like bought day ******* and your call center staff are useless like a blunt knife they cant help one with anything. i demand answers. i have those old sms when the data that i subscribed for. i am disappointing and disgusted as most people feel the same about this whole data thing.