Most useless service provider

I took a data contract from Telkom mobile for a friend of mine, after the first month I tried to cancel it as there is poor reception (most of the time she can't use it , according to Telkom mobile there should be good 3G reception). I have trying to cancel this contract from February and took out an ADSL contract so that she can do her work. They said they will send a technician to test the reception. This is already middle August and I still have to pay for this. No technician, no help from them. I have moved to the UK in June and no it is impossible to sort out this issue.