Called my cell at 5:15 pm today. Didn't answer and no message left. Blocked

Telemarketers. Blocked #.

Called around 5:10pm, left no message. I do not pick up calls from unknown numbers. Glad to see it reported by others as well

Called but left no message. I stopped answering any calls from unknown numbers.

Called me at 5:27 p.m local (2327 GMT). I didn't pick up and the caller didn't leave a voicemail.

I sent a text back verbatim "Don't know you. Not picking up", then got an immediate automated reply from number +1 121-611-611 stating: "17322304139 Error Invalid Number. Please re-send using a valid 10 digit mobile number or valid short code. Don't know you. Not picking up."