Got a couple of calls from this number.  Did not answer since I didn't recognize the number.  I've seen other posts that it is a "robo call" trying to sell something.

Robo call
Alliant Home Security
877 746 2559 ext 4296 John
also 214 447 7468
Don't get mad get even. Send their installer to a vacant lot. Prank the crap out of them. Call John and tell him his house just burned down.

Called 2 days in row area code from Los Angeles Ca

Spoofing Robo Call, I hope this company is fined and shut down for Good!! Asked to be removed from the list on 3 different occasions, but now they call me from multiple numbers a few times a week. I would never do business with any company that thinks this is a valid marketing plan. Makes them definitely seem like an illegitimate company. California Protective Service Californiaprotectiveservices.com 1-888-277-2776 Let's work on getting their scam shut down!!

I have the same prob. They took some info for house protection a while ago and now calling me everyday from varies states. When I ask to put on do not call list they call from diff numbers. I'm more worried about the info i released when I thought it was a legitimate house protection co. Please investigate this company they are taking very Privit info from peplple to verify is they are home owners. Here are all the numbers that they called me from :
(213) 279-0973 Los Angeles, CA
(325) 793-4000 Abilene, TX
(617) 532-6858 Boston, MA
(802) 829-1498 Burlington, VT
(936) 206-9017 Conroe, TX
(901) 435-4878 Memphis, TN
(720) 799-2998 Denver, CO

And more ....