Only Edge intermttant service

I have been trying to get MTN to investigate the signal at our property since August 2013. I did not **** record of the ref numbers but have the one for 4 Feb 2014 when they promised 10 day response after many previous ones. *** 4 Feb 2014 lodged with Thupana. Subsequent requests delivered nothing. We are 15 year contract holders with MTN and have children overseas and therefore have included Data packages on expensive Smart phones but are unable to access it on edge and lose our data allocation every mont although we paid for the data and the smart phone to use it. We use our Afrihost/telkom DSL for communication with them and have to pay for that service also, at least it work. Account with 3 phones MJ Bornman A***.