Who called from 6104566194

Phone number calling is not a working number.  Most likely spoofed by the caller.

Call was from an unknown company, looking to sell extended car warranties for one of my (no longer owned) cars.  They are one of many third party companies soliciting such warranties, but obviously do not have their records updated, as I had sold the car nearly two years ago.

Constant calls - every day.  Answer phone and they hang up.  When attempting to call back and request that our number be added to the "Do Not Call" list it is busy or it just disconnects.  Unable to remove our number from this nuisance caller!

Just called, did not answer and they hung up

Yep, trying to sell warranty on my vehicle.  They call me multiple times a week regardless of what I tell them.  We're pretty close now, I talk to them more than my extended family.