I'd be more than happy to assist you. Activation Lock is typically activated when a phone is lost or stolen. Did you recently purchase this phone from someone?
This issue has happened to others in the past. I'll link you to some articles as evidence. In the meantime you'll have to call Apple to verify some information and have the erroneous activation lock removed: 1-800-MY-APPL
Articles Discussing the Issue: http://www.macrumors.com/2016/10/05/iphone-activation-lock-wrong-apple-id-issues/