OK Here's the scoop on these incessant calls from 330-479-0000,0003,0004 and 0006. It is a fund raising company, out of Canton, OH named UniVision. The March of Dimes has contracted with them to raise donations for the MOD (a wonderful organization).Univision insists they do not call after 9pm (false!) or on Sundays (false again) and if there is no answer they go on the the next number. I personally have received in excess of 20 calls! and like you, they don't leave a message, I can't call them back OR they hang up the second you answer. So Here's what to do:
Call the March of Dimes Hdqtrs in White Plains NY 914-428-7100 ask for fund raising dept and inform them that this Univision Company is tarnishing their good image by their guerilla marketing strategies. I informed MOD hdqtrs this am that my family has given to the March of Dimes for generations, however unless or until they sever their relationship with UniVision, we will not contribute to MOD again.
So Call and relay your experience(s) to Director of Fundraising for MOD.
They NEED to know!
 Dec 06th, 2007
Got 2 calls over the August weekend from this number. No message left. Frightening what they can do to you, McCaffreys!
 Oct 10th, 2007
This was our number. A telemarketer is using a device that allows him to program any number he wants to show up in the callee's caller id. We would get 40 calls a day from people wanting to know why we called them. He is using a range of numbers from 330-479-0001 through 330-479-0009. He is apparently rotating through this range, using each number for a few weeks at a time. AT&T was no help. FCC was no help. We finally had to change our number.
M McCaffrey
 Jul 27th, 2007
has called at least twice, number not in service, but caller ID reads McCaffrey M.
 May 26th, 2007
blank on ID besides number. No message left.
 May 24th, 2007
keeps calling, hangs up on machine. Called back # not in service
 May 12th, 2007