Contacts Issue

Hi I have a jailbroken iPhone.Got my contacts onto it originally by using the installer apps like anysim or simport.Although I found that while they do a decent job at importing your contacts , when one of your contacts calls the phone doesnt recognize it.. so instead of saying "Oliver is calling" it just shows their number as if you hadn't got their number in your phone book.I restored my iphone last week as I was updating to 1.1.4 and I decided to sync my mac with my iphone as I have all my contacts on my mac.. But .. I still have the same problem! Anyone else have this problem?any solutions?