Called my cell phone and my sister's.

Called at noon. Left no voicemail.

Called at 4:19 PM --- I did not recognize it and did not answer -- of course, left no message

Don't Call me please

OK, we will not call you "please".

Why do you think WE are calling you at all?

This is a discussion forum where one can report or describe suspicious or unknown phone calls, but reporting them here does not stop the calling.  YOU have to take action to do that!  (google is your friend).  Consider buying a call blocker from your favorite store if nothing else works.