Me and my wife traveled to asia on air france in october. While checking in, i gave the guy our delta skymiles number.
He entered our skymiles number for the first leg, but did not enter it for the second leg. So we ended up getting almost 4000 less skymiles for that trip.

I still have boarding passes etc from that trip, and it has been about 4 months since we flew, is there a way to get those miles credited to our skymiles account ?