calls and hamg up

Call every day and hang up.

Called them back and got, "Sorry. Your call cannot be completed at this time. Please call back later. Thank you".

calls and hangs up

Spam caller--calls and hangs up--this is a test to see if a person answers. If you do, them you will be bombarded with calls form every charity in the land---mostly FAKE charities. If you really want to help somebody try Red Cross or Wounded WARRIORS--somebody who actually helps people and can show you how.