Bad Customer service from billing department rude

For two weeks I tried getting through to Telkom billing department since that time i have called 8 times and in that time we have not received help and their advisors are rude and sound uninterested in helping and dropped the phone on my ear further more they even billing me twice that is day light *******...Telkom doesn't care about the people that give them business... Advisors tell you I don't know what kind of service is that...