score:7
someone with my same first and last name and date of birth was recently banned from entering the Schengen area.
That's exceptionally bad luck and a really tricky situation.
Best you can do at this point is to call/chat/twitter the airline and ask for advice and potential rebooking or some sort of assistance in getting through immigration.
When you go through the immigration, ask the officer what you can do to have your specific passport disassociated with the ban. You may have to engage professional help to deal with this.
It helps if you are a EU citizen: I don't think they can ban citizens from entering (regardless of name and birth date).