Calls that go unanswered with no message left, followed by a busy signal on callback, often signal suspicious activity. This pattern is common in automated dialing systems used by scammers to check for active numbers without committing to a conversation. Stay cautious—don't return calls to unknown numbers, as it could confirm your line is live and invite more spam. Block the number immediately on your phone or carrier app to prevent future rings. If it persists, report to your telecom provider or authorities like the FTC. Enable call screening features to filter unknowns, and verify any claimed identities through official channels only, never via unsolicited calls.
No voicemail was left despite my voice note requesting one; when I tried to call back, the line was permanently engaged.
