Received a call from this number. no message

I use Cheetah Mobile and accordingly it warned be this was an Harassment Call so I didn't answer it.

Received a call, when I answered there was a ringing like it was connecting me to a caller then a Hispanic lady answered and said hello like I called her. I then hung up.

Same to me

Received call on my cell from 951-363-0163.  When I answered I heard a strange beeping sound, then a voice says, "Goodbye," and hangs up.   I worried that the beeping sound might indicate the transmission of some spyware or something to my phone.   I used a land line to  call the number.  Message says, "This mailbox is full."There certainly some kind of scam involved, here.