Ernest's cellphone is making "ghost" cellphone calls. Leo says if he's getting phone numbers on his bill and they're not in the call log, it could mean that someone has cloned his SIM card. Since he has Verizon, it means someone may have cloned his CDMA phone. Ernest should contact the cellphone company and demand they refund him. He should go into a Verizon store and talk to someone face to face. They should be able to see the phone and the bill and see the issue is that the phone has been cloned.
Leo also wonders if he's using Google Voice, because the unknown phone numbers on his bill could be the direct access numbers that Google is using to place calls.