Who called from 2487797891

Got a call on April 9.  Caller ID says Helping Heros. Area code is a Michigan number. Have never heard of them but my guess is they're trying to collect donations for service people, military, police, etc. but who knows.  Might be a scam. No message was left.  I don't answer calls from names and numbers I don't know nor call them back.

1-248- 779-7891
ID Said it was from "Helping Heros" left no message

Got a call from the mentiond number, but no message left.   They hng up a few seconds after I answered the phone.