I don't answer. They don't leave message but continue to call

Yeah, I just got a call from this number.  It hanged up after 11 seconds.

I got a call from this number, no one said anything after I said hello twice. So I ended the call. The number comes from a reported telemarketer. I read on YouTube about how certain numbers will call you and once you answer. You're info can be taken. Hope that's not the case. Don't have much anyway. Just trying to maintain what little that I have.

Called me, did not answer but left no message

Got a call on my cell phone. Tried to call back but got a busy signal