Need Affidavit to block my own cell/simcard

On the 10th January 2015 arund 21:00 I was hijacked and lost everythig, my ID, licence, cell, passport, etc. I opened a case, and the car was later recovered. I went to cell c the following day at Menlyn, on the 11 January and tried to block my cell and simcard. The young black lady who had dyed her hair in blonde told me iI need an affidavit, I showed them a paper from the police that had all details she said she cannot accept it. I asked to speak to the manager who came and told me he does not know me and need to get my affidavit or id or some form of identification. I have 3 cellphon numbers, all of which are cell c, I thought they could do a security check but none was made. I had to be chased out of the store and told to come with identification. I was helped at Cell C The Groove mall, they told me I do not need any affidavit or identification to block the cellphone or simcard. I have had a turbulent start to the year and did not expect a company that I bring atleast R1000 per month to treat me like that. I will port my prepaid cell c number somewhere else and wait for my contracts to end then go somewhere else, they do not deserve my hard earned cash. I send cell c an email,