same thing happened here - one ring, then disconnected - it must be a bot. A few other 'search-who-called-me' websites had identified the caller as "Julie from The Rebate Center"
It's a call from a rebate center. They only rang my phone 1-2 times & then they hung up. I called it back & an answering machine picks up saying " Hi, this is Julie from the rebate center. Were calling because you recently visited one of our websites and we want to reward you with a rebate card".