Who called from 7866071798

The phone rang once but they hung up before I could dismiss the call

I called back the number and an automated message said she was Lisa with "Award Redemption" offering $100 Gift Card for visiting a companion website.

I got this call, rang once, I did not answer

Rang once then quickly called back and rang once again. No message. I did not answer - couldn't have gotten to it quickly enough if I'd tried. Calls were to my cell phone...... now permanently blocked.

Same as above -- rang once... I didn't answer.  No message left.
Thanks, 800Notes for your service!!