Activation sim card

My cell phone was ****** on 11 February. I made a call to the call centre to blacklist my sim card. I was referred to the local branch to do a sim swop which I did. I was told that the card would be active witin 2 to 20 hours. The next day I made enquiries at the call centre and was told that the technical division was busy with upgrades and my phone should be active within a couple of hours. On Friday I made anotber call to tbe call centre and was referred back to the local branch which I did. The assistant checked the system and told me that the sim card was active. He called the call centre but no explanation could be providid for my problem. I insisted that my sim card be tested in a different phone. This served as proof that there was no problem with my phone. The assistant told me that he would call me back after 3 hours. No call was received after which I made a call. I was told to keep my phone swiched off and only switch it on every 2 hours which I did. On Saterday 14/2 I received a call from tbe assistant. I confirmed that problem was not resolved. He told me that he would call me back which he didn't. I urgently need my phone. It is 2pm on Saturday 14/