Contract still not activated after 3 months

I have had the worst service from MTN, this is not possible. I am the moment been on hold for the past twenty minutes to ********** 622. I've been passed around for three months, and I am still not been activated on my sim card although my account is debited and up to date. The call centre agents don't seem to care, all you can do is call back in 24 hours after you take out your sim card and put it back. They don't seem to know what to do so the pass you from 808 to ********** 622. MTN does not seem to know what they are doing. can someone please assist me with activating my sim card. Simple request. Its been three months since i signed up.