BRIDGE OF CONTRACT

I have a huge problem with mtn, I upgraded 2 of my numbers one being a data only specifically for WiFi as I also purchased their home WiFi, my upgrade was for 20 all day data and 20 night express data, I found out on the 17th this month that they have been loading 10 for day and 10 for night went to mtn North gate and was told that I'm not the only client and they will fixed it. Went back on the 22nd hence nothing was done and was told they sent my complain and they will get back to me the manager was not available Mtn is not honest my problem is still not fixed till today, haven't received any call from them. This is what I need from mtn to reimburse me for all the data they haven't been paying me and fixed their problem, this is not the first time they usually never load the night data as per contract. I have been a very loyal customer for years but right now I feel like they don't care about their customers I'm fed up I have stayed true to my contract mtn my do the same. I'M ****ED BEYOND MEASURE AT THIS POINT