8ta data used up and no signal

Two of us have 8ta contracts for data and two have Telkom cell phone contacts. Out of 4 contracts, none of us have stable internet signal and our data keeps getting used up (on what, we have no idea). We have reported the bad signal,as well data usage being used up, but never receive feed back. Regarding the data, I only use for business emailing etc, I do not not download movies or music and yet all the data just disappears. My contacts that download music and movies, still have data left from their few gigs.Just just this month, I have had to purchase additional data three times now, and it's not even the end of the month yet. To use 5gigs, then another 2gigs and then another 2gigs, seems quite extreme. People can't seem to contact us on the Telkom network most of the time, which obviously is also a huge inconvenience. I have requested that Telkom investigate 1) internet signal and sort out a tower or server 2) data usage<br> If this area has a problem, Telkom should cancel the contracts with us if they are unable to provide the service we are paying for. <br> Looking forward to receiving some response.<br> Regards<br> Margaret<br>