Telkom mobile

If Telkom mobile could respond? Calling from my Telkom miobile to a Telkom number. The response is ' number does not exist, Been on the phone to their help desk., first call took more than 10 minuutes. suddenly the line went dead. 2nd Call. line went dead after going through the whole automated system, and holding for an operator. (4 minutes). This is not good enough Telkom. If Telkom could tespond please