Who called from 5034865235

keep getting calls from this number 503-486-5235, do not know anyone there

They keep calling & calling my cellphone number, but never leave a message.  I assume they're spam or scammers.  If it was someone who wasn't a fake, they'd leave a message.

Oddly, my cell phone never rings when they call, it automatically goes to voicemail.

Yeah - they keep calling me and when I answer there is no one of the line.   I think there is a way to report this to the FCC and shut them down?