I have gotten calls from this number listed only as "Keedysville, MD" recently.  I never answer and they have not left a message.

Senture office in Florida on for "SP Research"--market research. They were polite and agreed to put on do not call list.

They call repeatedly, several times in an hour.  Never leave message.  Caller ID just says UNAVAILABLE so they are deliberately hiding who they are.

Got several calls from this number today; when I answer it, no one is there it immediately hangs up.

Have been receiving calls nine times a day from this number, sometimes every ten to fifteen minutes. I have called the number and get a recording that says it is a Network Research company, but there is no one to ask to remove you from their list. I am on a do not call registry; it doesn't seem to matter.

Calls for me from this number started on Friday or Thursday of last week. They have built up in number and now, the following Tuesday, they're coming in every 10 minutes. There is never anyone on the line when I answer. Is there any way to stop them?

301-660-9108 has been calling the house in Silver Spring, MD, persistently for the last week or so between 5:30 and 7 p.m.  No response if I pick up.  Quite annoying.

This number keeps calling and nobody responds when I answer.  They call about 4 times a day.

Senture (HQ in London, KY) office in Florida  for "SP Research"--market research/survey.  When asked provided office number of 352-291-6769 and agreed to put on do not call list

Persistent and repeated calls...no response on  caller's side.

This number keeps calling and nobody responds when I answer.  They have called 4 times this evening so far.

It's a netsearch survey company

unknown