This phone # has called me over 20 times with no one on the other end, and they do not leave a voicemail. Should i be concerned?

This phone number calls me an average 5 times a day.  There is no name with the number, so I do not answer.  They do not leave a voicemail.  If the number is ligit then why not leave name and number for a return call?

http://mdjl761.800notes.info/archives/33 When I googled the number mentioned (925-738-0268) it came up with that web link starting off with ""China JK furniture factory for international customers build different Solid Wood furniture and paste barks"". and about mid way on that web page it stated --
Known Problem Numbers of "Telemarketers Collection Agencies and Unidentified Sources", with a bunch of numbers including the mentioned number and the other number called to my phone (925-738-0254), my husband answered the first number I mentioned and a young adult girl asked to speak to my daughter or so my husband thought, but and because, she pronouced my daughter's name wrong, plus -she would not say who she was, but said it was a personal manner. When my husband asked who she was - she said nother, paused, and then hung up on him. My daughter has excellent credit, so I would not not why anyone would be calling her for that. It may be a trick to get us to call back and be charged like a 900 number.

This number has been calling me at least 20x a day for a few weeks now at all hours of the day or night, and never leaves a message.

https://www.donotcall.gov/complaint/complaintcheck.aspx
Here is the National Do Not Call List to file a complaint

Whitepage.com came up with these locations to the number - but remember numbers can be re-routed to look like they are from one location and really located in another.
(925) 738-0268Type: Land Line
Provider: MCImetro, Ats, Inc.
Location: Pleasanton, CA

(925) 738-0254Type: Land Line
Provider: MCImetro, Ats, Inc.
Location: Pleasanton, CA

The county is - Alameda

The only two collection agencies the came up in the yellow pages for "Pleasanton, CA" were -
Ltd. and Associates at 6210 Stoneridge Mall Rd, Pleasanton, CA 94588 (925-598-0056)AND Transworld Systems at 5976 W Las Positas Blvd Ste 208, Pleasanton, CA 94588 (925-251-0456)
When doing a search for the zip code near the location it said the numbers were from (1st street and Main) it came up as "94566"

I tried looking up the phone number in relationship to a business, but nothing came up, therefore the call must be coming from a residential

http://mdjl761.800notes.info/archives/33 When I googled the number mentioned (925-738-0268) it came up with that web link starting off with China Furniture for Sale and about mid way on that web page it stated --
Known Problem Numbers of Telemarketers Collection Agencies and Unidentified Sources, with a bunch of numbers including the mentioned number and the other number called to my phone (925-738-0254), my husband answered the first number and a young adult girl asked to speak to my daughter or so my husband thought, but pronouced her name wrong, she would not say who she was, but said it was a personal manner. When my husband asked who she was she would not say and then hung up on him. My daughter has excellent credit, so I would not not why anyone would be calling her for that. It may be a trick to get us to call back and be charged like a 900 number.

same here, i'm in wisconsin and they keep calling me.

caller id says 19257380268

I ANSWER & NO ONE SPEAKS

no one speaks

The same problem when I answer- no one answers, no message, and it calls with different numbers. I finally was so irrated by the call that I did a google search and found this.

Well the system is really broken!

This is one of more then a dozen numbers from the same area code and prefix that calls my cell phone, leaving no message on voice mail or not speaking when I answer.