Sounds like they are an offshore call center, vetting leads for US clients. Instead of spending your day cold calling, you hire out to a third party company, and they connect confirmed contacts. I get so many of these calls, usually after attending a tech security, or CRM conference, so I always check the number before answering.
I just got a call from this number from someone with a heavy accent asking for someone with my first name but a different last name. Didn't say where it was from. Then they apologized and hung up.
Called my business line asked for me by my full name then said my full name and mentioned a different company name and asked about a medical record claim number. I then just hung up on him. He had a Filipino accent and you could here a girl talking on another phone in the background.
Said they were from Usability Science or something. Asking for old employees. Got another call from this company from a different number earlier today using the same script (calling on behalf of their boss, don't know what the nature of the company/call is, heavy accents). Seems like a sales call and they were fishing for info. Told them not to call again. I pity the next telemarketer who calls me from that "company".