Received 3 calls this week. No voice-mail.

I received multiple calls from this number. No VM and can't call it back

Got 2 phone calls from them the last week. I started a small -side- business few months ago. That's when all these (robo?) calls started. I reported their # at the DoNotCallMe list, like many others, but that may take a month to apply.

I've been receiving a call from this number for over one week now. Once, I answered but there was no response or sound from the 'caller'. Another time, I tried to call back, but it was a non-working number. Today, when receiving a call, I just declined it.

Multiple calls.  Answered once -- no one there and no recording.