Like I said....I get it....I just noticed it for some reason.....nothing more or less than that.It's not like they're all on a party phone line waiting for anyone to get a call. Sam responded to the situation because he had an inkling of what was going on having been involved. Spider-Man's got his own issues - maybe Sam called and got shunted to voicemail. Ant-Man is across the country in San Francisco, probably tackling other issues with the Wasp.