Who called from 3124124967

Don't know this number but it's calling my cell phone repeatedly.

This number has been calling but refuses to leave a message. I am not sure what it is but it is annoying and when you call back it states it is not a working #.

Same here, called it back got recording saying that its a non working number. Ended up on my block list.

Same for me...they call multiple times a day.  Sometimes they leave voicemails of just background noise.  I added them to my reject list.