Payments Pending

Hey, I made a once off payment yesterday at about 16:10 to someone who also using FNB, even now that person haven't receive the money, I've been calling FNB four times today, they keep on telling me that after 15 minutes the money will appear to that person, Iam so angry now because that money was suppose to pay the building material, the money is shows that it was successful sent on my account and the reference number is VOD5RONNIVK,but the person who suppose to received the money haven't get anything