Bad Service

We bought a contract phone from MTN about two/three weeks ago. We decided to use an MTN number that already exists so the contract benefits would go to the number. To this day, the sim card has not been activated, benefits have not been received yet. All we get is an SMS that says 'This number has now been authenticated' but nothing. This is frustrating because we have the phone but the benefits are not included. We have called MTN and they told us to go to an MTN outlet which we did twice, and still... the number is not yet active as a contract number. The second time we went, they said that it was an internal error from their side, now the question is - why has it still not been fixed?! When they start deducting money, it will be the full amount, yet the sim card has not been activated, This is beyond frustrating, MTN does not care!