I have gotten 4 phone calls from this number today....I have been getting calls like these all week, where I will get a call 4-5 times a day from a number, and then the next day it is a different number from a different area code.  They never leave a message either.  And when you try to call them back to find out why they are calling, I get put on hold and just hang up.

exactly the same thing here

i recieved a call from this number and NO VOICE MESSAGE.

I have been getting calls on my cell phone for about 2 weeks. They will call from one number two or three times and then it switches to a number on the other side of the country. I believe there are 4 or 5 different numbers. They just call in a rotation.  Twice from each number. Voicemail is just silence usually, but occasionally hear "representatives are unavailable please hold" but they never answer.
Annoying!  Some of the other numbers are 415-358-7671, 804-234-9059, 757-209-2047, 919-913-0963

"Got three already this morning.  I'm not sure how my private cell number made it on to a list, but I've been getting 10-15 daily spam calls from a new unknown number every day.  They never leave a message, they never answer you when you pick up."

Same here.

What is going on?

Got three already this morning.  I'm not sure how my private cell number made it on to a list, but I've been getting 10-15 daily spam calls from a new unknown number every day.  They never leave a message, they never answer you when you pick up.