FNB CONEXIS X2 SIM UNLOCK CODE - BAD SERVICE FNB

Hi all,

I recently purchased a second hand FNB Conexis X2 from Cash Crusaders, did some research discovered i had to be a FNB client in order to acquire a FNB sim card of which i don't want, i inserted a Telkom Mobile sim and it asked me to enter a Sim unlock code!!!! i immiedically contacted fnb customer care of which was a nightmare of dropping calls. i eventually managed to contact someone at the call centre explained my situation and was told that a call would be logged and i would be contacted within 72 working hours. of which never happened as usual. i made contact again only to be told that i wasn't able to get the Unlock code and was told to contact the Cash Crusaders store i purchased it from and get a hold of the original owner of the device to obtain the code. i have done so with no success. I FEEL THIS IS UNFAIR AND WOULD DEMAND SOMEONE FROM FNB TO RESOLVE THIS.!!!