Who called from 4420741833

This number called & a machine said they had important info about my car warranty.

That same number can up on my cell phone, but I didn't answer....they did not leave a voice mail. My cell phone number is a private number..
What is going on? Any clue?

Same number called my phone last nite at 11pm.  Cel phone land???

I got the same call last nite @ 8:53p.  Didn't answer and no msg.  Who are they??

They've called NINE times from this number, 4 from 2 other numbers. this is my CELL phone, and I have regersted my cell number on the "do not call" list.... obviously THAT doesn't help!