Calls several times a day; leaves no message. who do they represent

This # calls me regularly. There is dead air for the first few seconds. then - nothing.

they never leave a message

Activated a new TracFone pay as you go phone and received a call from this number. May have received more than one. Since activation I have received numerous calls from unknown numbers and just ignored/deleted them. I have since been trying to see if any are repeats and reporting them. I purchased my phone for emergencies, not for all these people I don't even know to be calling me.

same complaint as others have made it seems. they call, hang up and i try to call back and can only get a busy signal. I dont know whom they are or why they are calling.

Calling up to 4 or 5 times per day. I have not answered the calls, no messages have been left.

Hung up before I answered...called during by kid's nap. Who is this?

missed call, returned and no answer or answer machine. Trying to see who this was

Said i won a check for global international and they were to deliver it.