Who called from 4048360408

Never leaves a message and when we answer they hang up.

Same here.

Just called my office phone and it's a recorded message for extending the factory warranty on a vehicle.

Started getting calls last week...when other people call this # shows up on caller id. Now this # has started calling every night at 4:00

Asked for the person who manages AT&T accounts.
I told him that person was not here and he hung up.
Sounded like a huge noisy call center in the background.