Called left no message.

Same here. Called and did not leave message.  CID shows "Life Insurance".  Don't need any unless they're calling to tell me somebody named me a beneficiary and the check's in the mail.  Not likely!  Blocked number.

Left no message. But showed on caller id Life Insurance.

936-213-1474 has called my cell phone the last two days but left no message. I blocked the number.

Unknown caller, did not leave a message at the prompt.  I bought a "call blocker" device that I saw on Amazon for my phone line - so this is now another phone number that I will block. Over 500 numbers blocked so far. The call blocker is capable of blocking over 9000 numbers.