Error on FNB side for lost card

Had to report my card ****** but it was luckily found but now FNB will not activate it. The app did not give me a block option only cancellation. Now FNB wants me to buy a new card even tho the app they have was faulty and did not give me a block option which I would not know since it did not show. Really ****my now that I have to pay for a new card due to a error on FNB app side. I just want to reactivate the found lost card but FNB seems want to get some more money out of me due to a error.