Same situation, called me and left no voicemail two days ago and called again today so i answered and there was no one on the other end, a quick silence and then they hung up promptly. I immediately blocked the number

Answered the call but there was no one on the other end

Caller: Unknown

Didn’t pick up the phone, thought I would wait for a voicemail but there was no voicemail, so must be spam

Phoned in the evening and when I answered there was nothing. No background noise, just silence.

no point ringing me, i dont answer unknown numbers duh

called me today. Didnt leave a message.

These calls keep ending up in spam, they don't leave a message

Has called me multiple times this past week and if the call is picked up they just hang up.

Has rung a couple of times at odd times of day. Answered twice and was no one on other end. Left other call to go to voicemail but no message left (surprise, surprise!)