Keeps calling once a day and hangs up after one ring.

rang once then hung up

I got the one ring call on my cell phone.

Calls I answer hangs up..

This number called my phone and rang once. I called it back and it is a recording of someone named Julie. She said this was a rewards program because of a website I recently visited and I had the option to press 1 to collect my rebate or press 2 to be put on the "do not call list."