get calls from this number but they don't say anything

The number belongs to the National Business Institute and they are doing surveys for Health and Welfare

I just received a call from this number to our main phone line at my office.  The lady said she was calling from National Business Research Institute (NBRI) located in "here locally in Texas" and asked me for the name of our HR director.  I told her I was not able to give out any contact information, but I could pass on a message.  She said she just needed to get some contact information for some individuals and chose not to leave a message.  Sounds like she was a telemarketer, otherwise she would have left a message...

they just called me and it was national business institute. my ex gave them my number. what a jerk

My husband and I both keep getting calls from this number on our cell phones. When I call back I get that same Krystal Myers answering machine. Who the H. is she? Do I need to be concerned about fraud?

they call me twice a day weird hours no messages. i haven't called them back because they havent left a message.

who is this lady?? I am sick of her trying to call me, i call back but no answer what so ever. Lame!

continued phone calls from this number. won't answer cause I have no idea who it is from.

they been callin me for a week now. i wont answer because i dont know the number. they call every day tho.