FNB Connect

I went to fnb to openna new bank card.While i was opening the card the lady who helped me said i must do a new sim card fnb connect.Without telling me that they would be deducting money every month she said i must take a new sim card.I thought she is giving me the sim card for free only to find that she port my number to this nonsense fnb connect that is problematic without network.I then open my online banking and block the sim card.Will tgis contract be cancelled or i need to go inside the bank for assistance as i cant loose my number.If you want a peace o mind dont go for this fnb connect sim card...its nonsense with no network