reply from mtn differ from my complaint

i got a reply back from mtn but they are not addressing my complaint. the issue is not that it is taking to much data, the complaint is that they are not taking the data of from my data available, as stated in the previous complaint. They are taking it from my airtime and once that is finish, i have to buy extra airtime.. there is also a messege saying i need to sign in to network but cannot do so as they do not allow me to use my data that is available. i have also send a new request/complaint via e-mail to mtn and again received an automatic reply 5 days ago saying that they have received the complaint but so far nothing further. this is now going into the 5th month that i am sitting with this.