Promises not Kept

I have a telkom contract that I took out late last year, however when I wanted to do teleconference with the phone, the phone is not allowing me to but am paying for the contract. I called customer care like 3 weeks ago to resolve the issue, I was then give a case number ********** 5, and I was told the issue will be resolved in 9 working days, I waited for 9 working days and nothing happened. I followed up the first time I was told that the issue will be escalated and I will be given feedback within 2 days, after 2 days no feedback and nothing has happened, I called again to follow up for the 2nd time I was told that the will escalate the issue again I will get feedback writhing 2 days I waited and nothing happened, I followed up the 3rd time on Sunday, I was told that the issue will be given to the team leader to escalate it for me, and the team leader will give me a call on Monday which was yesterday, and still nothing happened.

The worse thing is that whenever I call, I wait 20 minutes on the phone before someone answer only to be told that my issue has been escalated. I believe this is a very simple issue to be resolved it's not rocket since that needs months to be resolved. Please can I get assistance to get this issue resolved as soon as possible.