Receiving threatening calls and sms messages

On 28 Feb we received another threating sms from Telkom Mobile not to even mention the calls they made to my wife before. I have been to Telkom Mobile to sort out this accout numerous times before but they can't resolve it. I went to them again and the person who assisted me gave me a reference number ***5 for the credit of R 185.35 on the account to be transfered to account ***. I then paid at ABSA the remaining amount of R 233.85 on 21 Feb 2015 and took the proof to them, handed it to Thembi who promised that they will update the case. How much must a person do to get such a problem resolved but instead you get insufficient service and a company that just wants to make your credit record bad. Please could this be resolved a.s.a.p. as my next step will be to go to the Ombudsman.