Block unknown numbers immediately to cut off persistent callers. This pattern of repeated calls from varying numbers, followed by hold music on callback, screams scam tactics designed to frustrate or lure you into engagement. Classical music loops are a common ploy to keep lines open or test responsiveness. Avoid calling back missed numbers; instead, report to authorities like the Do Not Call Registry or your phone carrier. Enable spam filters on your device for added protection, and never share personal info if they do connect. Staying vigilant prevents escalation to more invasive harassment.
Repeated calls from various numbers resulted in a missed call; returning the call only played classical music, and despite blocking each number, the calls keep returning.