Sim Swop Anger

I was ****** Friday 28 May and they took my phone. On Saturday i went to an MTN store in Century City and i was assisted with Sim Swop. I was advised to switch off phone for 2 hours . After 2 hours i should switch it on and dial *123*888# to check if the sim swop has been activated, and if its not activated i should then switch it off for 24 hours as it takes between 2 - 24 hours to activate the sim card. I understood and followed as instructed. On Sunday I checked after 24 hours, sim card not activated. I called MTN call centre, they told me i was given false instructions, apparently i was not supposed to switch off Sim card. so they initiated another sim swop request to wait yet another 24 hours. i kept the phone on. On Monday same thing. On Tuesday i went to buy a new sim card tried the Call centre route again round about 22:00. I had to wait another 24 hours. Thursday at 23:00 I check again and then decided to check it in the morning. Thursday Morning, today, still not connected. I I called that useless misinformed call centre again and I was told that my sim request is being rejected by the user. How??? When i call my phone its off. It was last seen on 28 May 5am. I asked the reasons why it keeps on declining, but no one knows the answer. Can i please get help in activating my number urgently!!!! I am ****ed !!!!!!!!!!!