Called 4/5, no response when answered.
Called 4/7, no response then heard voice just as I was disconnecting.

someone called me from that number trying to sell me illegal prescription meds, which I want no part of.  it is obviously some kind of fake number.

same issue as other folks when phone is answered there is silence - getting similar calls from a 99-1 number it is some overseas call center trying to sell something!!!

These people are calling me everyday on my cell phone to sell prescription drugs.  They call themselves Shivalik and are offering 120 hydrocodone for $350, amongst other illegal drugs.    I'm trying to make them LEAVE ME ALONE because cursing them out doesn't work - they don' t understand English.

These scammers have been reported to the Federal Trade Commission as of 9-13-12.   If they continue to call, I would suggest you tell them they have been reported.