Same here; was out & no message received although the caller I.D. showed Burlington, VT.

5/1/13 not only received the call again at 11:57 a.m. on office phone, picked up but only a tone & totally nothing a long time; at 12:13 p.m. they called the house phone that I tried to intercept before my aged MOM picked up while I tried to intercept.  Bottom line; not a client, a robo call for who knows what other than aggravation & grieve!  Keep reporting & documenting times & dates; HOPEFULLY ONE DAY WE WILL PREVAIL IF THE STATE & FEDERAL GOVERNMENTS GET OFF THEIR DEAD HORSES & LET SMALL BUSINESSES SPURN BUSINESS VS. SHUTTING ANSWERING ANY UNRECOGNIZED NUMBER OR NAME!

Searched yesterday to limited result & posted; posted on two sites due to lack of information.  Believe in this site & proud to respond with a 'bit' more information.

Caller left a message, affiliated with Stamp Stampede. I'm on their mailing/contact list so this makes sense.

I answered after 2 rings.  Got dead air space for quite a while until I hung up.

left no message