Un -balcklisting

I went to cell c to UN-blacklist my phone so took all the documents there. But one thing that was not there was my ITC number as I don't have the document that had it so I asked if they can pull up my ITC with my id number they told me they can't since my number was ported to Telkom, it really does not make any sense to me that my id can't pull up the blacklisting of my phone. and tried before and the documents where faxed and nothing was done till I decided to try again and know i been told they can't find my profile because my number was ported to Telkom. I just want my phone UN-blacklisted that's it. you can't tell me you can't use my ID to find my blacklisting profile . <br>