Who called from 4252825117

didn't pick up number because i didn't know who it was, think it might have been from a buisness

nobody is on the other end....very creepy. I stopped anwering. They will call you and call you for no reason.
I don't know how to stop these calls. Here is another Number to look out for (425) 282-6603.
Both Numbers are from the Renton WA area.
They must be telemarketers (very annoying). Its too bad you cannot report these numbers to the police as herassment calls.

got a call from it, tried to return it and got a constant busy signal

the 425 282 6603 number is for Microsoft playtest study.  You probably signed up for these calls.  I missed the call and called them back and they were very pleasant.

This number (425-282-5117) is for the Microsoft Usability study.