I called it back from a land line--it tells you that you visited a website and qualify for a $100 rebate card. Just a sales pitch I am sure. It gives you an option to be dropped from their call list.
Got two calls in a row within seconds, both calls ended before I could even reach my phone to see who it was. Wouldn't have answered anyway since I didn't recognize it and my phone says they called from Delaware. No messages left. I assume it's a telemarketer or scammer of some sort.