phone calls with no one on line when picked up.

These idiots have not called for a while but they're blocked

They claim they are with some company that does time shares and vacations

Received a call to come in for a job interview??????

They call multiple times a day but never leave a message on my cell. I don't answer numbers I don't recognize. This  has been going on for about 2 weeks now and I am getting tired of it.