The same thing happened to me. I would call Netflix CS first to see what's going on. They'll be able to tell you if you qualified in the first place and if they sent over all the info to the FF program you signed up under. When I called, they said everything looked fine on their end and they sent all the necessary info over to United. United said to call Netflix back and I did. Netflix opened up an inquiry and the matter was resolved in 2 days with the 4000 miles posting to my account 3 days later "as of" the date I actually signed up. My problem lasted 10 weeks since the T&C says that the miles may take something like 8-12 weeks to post. What I did so I didn't have to pay the monthly fee after the first month was put a hold on my account which can be as long as 3 months I think. Good luck.