it might be debit collectors

Calls several times a day. Make it stop!

No clue who this is or why they are calling my cell phone.

i received a missed call from this number. after a research it is a law office trying to collect a debt. they don't leave a message to call back.

 Bill collector !! They don't leave a message; but if you pick up there is a recording.. The law office, and name came from this sight.

I've been recieving these same fraudulent calls. They claim that they would like to talk to me about discounts I qualify for on my Duke Energ bill. The calls started off coming every couple of days from three different numbers, now they are calling three times a day.
Today (1/29/14), I've receive three calls, from two different numbers: (216) 239-1766 at 6 p.m. (513) 685-6003 at 2 p.m. and 4 p.m. Yesterday (1/28/14) I received two calls from (513) 658-6003 at 3 p.m. and 11 a.m. The day before that (1/27/14) I receives three calls from (513) 658-6003 at 6:30 p.m., 1:45 p.m. and 1:30 p.m. Before that I was receiving the same calls from a New York number, (914) 530-2290. They called once on (1/23/14) 11 a.m., once on (1/21/14) at 1 p.m., once on (1/16/14) at 4 p.m., once on (1/17/14) at 1:30 p.m. On (1/20/14) I started getting the same calls from yet another number from Arizona, (623) 242-1558 at 1 p.m.

This number belongs to the following:

Law Office Of Joe Pezzuto, LLC
4013 E. Broadway, Suite A2
Phoenix, Arizona 85040

Phone number 1: 888-478-8090
Phone number 2: 866-295-4778 (this is the number that they ask me to call back)
Fax number: 602-437-6980
Phone number 3: 623-242-1558 (this is the number that they called me from)

This is from a so called attorney.  It's from a third party trying to collect a debt.