Who called from 3258993614

So far today have received 7 calls from random phone numbers, all different, starting with 325 area code.  If you call some of the numbers you get a message that the number is no longer in service.  This has been going on for almost a week, and I am sick of it.  Does anyone have any idea how to stop these?

Same thing is happening to me. No clue what it is. They leave long silent messages too