Who called from 3602274619

They called 13 times in 4 minutes, leaving voicemails on all of them. I'd be on the phone with one of them, and there'd be an incoming call from the same number. Only after I demanded to talk to a supervisor with three of the callers (and was hung up on every time), and then answered the phone with a loud, "Hello again!" (and was immediately hung up on) did the calls stop.

Called and left a voicemail of a teenage mail singing a love song... Say what?!

The company website is www.ffg2.com 
They called my Federally Protected Do Not Call telephone number.
Located at:
292 East 12200 South Suite 200 Draper, UT 84020 | Phone: 801-495-2009 | Fax: 801-495-1373
Sleezy insurance sales. From their web page:

FFG provides insurance services and is a company keenly focused on the financial health of America. Using sound principles, quality life insurance and annuities, and a selection of other proven financial products, FFG can provide a detailed road map to help you achieve your financial goals.

It's a scam. It's telemarketing, and calling my cell phone (as you did) for that purpose is illegal.

Just got a call from them with the scratch ticket 4 prize shenanigans. Told them I was on the do not call list and they hung up.