Beware of unsolicited calls that hang up quickly or play odd sounds like bird noises and music—these are classic signs of potential scams probing for active numbers. If the callback gets forwarded and denied, it suggests automated harassment or robocalling tactics to evade tracing. Block the number immediately on your phone to stop the annoyance, and enable call screening features if available. Report it to your carrier or authorities like the FTC for patterns; avoid engaging or sharing info. Staying vigilant protects your privacy without overreacting to one-off weirdness.
They repeatedly call, lasting only a few seconds before ending; when I answered, someone muttered something then only bird sounds and music played. Returning the call gets forwarded instantly and then denied.