Unanswered calls without voicemails demand caution, especially when callbacks fail with connection errors. This setup often signals unwanted intrusions like spam or harassment, protecting privacy by avoiding engagement. Block the number immediately to prevent repeats, and report it to your carrier or authorities if it persists. Enable call screening features on your phone for better control, and never share personal info with unknowns. Staying vigilant helps maintain boundaries without escalating risks.
I got a missed call with zero voicemail, and when I tried calling back I got a 'your call could not be connected' notice—another annoying nuisance, huh.