Bad service

I am very upset with the service my daughter is receiving regarding her cellphone. Her phone keeps on saying no network, Telkom just tells her than to use the MTN network but she only gets limited data for MTN network.<br> <br> When she got the contract with them 9 monhts ago the phone did not give any problems, it started about a month ago when is started saying no network.<br> <br> They also told her that she must then pay them to get out of her contract.<br> <br> Regards<br> C Williams