Contact issue

Hey everyone I am having a contact issue on my bb 9900. I have a phone number saved in my contacts but when it calls me it doesnt show the name on caller ID, but it will show there name in the call log as well as in my contact lists. I have tried saving it a number of times in different fields such as "mobile, work, home, ect, but it just refuses to show up... I have tried pretty much everything except a reload of the OS, does anyone have any reccomendations on how to fix this. I have searched the forums and tried a number of different things that people have reccomended but nothing seems to work.