Who called from 3865649033

They have called several times and just hang up when we answer. I have tried to call them back and it says that the call can't go through

I got a call from this number even though I am on the National Do-Not_Call list.

they called twice at 5:49pm, I had cell in my back but it did not ring, they hung up.
Call was from Daytona Beach, no voice mail left.

when I signed in, there was an ad on this site advertising a security system for 9.99/mo!!!
Perhaps they are the ones calling us!

Guy asked about my security system. Asked him these questions to which he answered: Company name? G.E. Genergy Elec. /Your name, Rep I.D? Jake...no i.d. / he states not sales call...but maybe my security system needs upgrade after three years. Adding he's just a college student (foreign accent..India?). MY REPLY: Do I have permission to tape this unwanted call? Shockingly he says, "Go ahead...not sales call." I clearly state that I'm not giving him ANY info about anything and not to call again. Weird, weird.