received call from 971-351-3180.  blocked it.  next day it was from 971-351-3181.  blocked it.  next day it was from 971-351-3182.  when i try to call them back it says the numbers are not in service.  so annoying.  don't know how to make them stop!

Put a call block phone app on your phone . I use ADVANCED CALL BLOCKER. You can set it to *answer and end call* also. Very handy when collection agencies call.