Getting calls from this number for more than one year (they introduce themselves  Pulse Telecom - they call also from 866-718-7016). Most of the time when I pick up the phone there is no one talking. Usually they have computer calling you till you pick up the phone, than someone will call you next day at the time you picked up last time.
Each time I spoke to someone, I requested to remove my number from the list, each time they promised and each time lied.
It's a scam - no legit company would harass potential customers in such way.
Russians in Brooklyn know those people as con artists who run simple phishing operation - offering unbeatable long distance prices just to get your credit card and personal information. Once they get it - there are different ways to make use of it...