Originally Posted by
mnbp
On DL.com, at Home > My Delta > My SkyMiles > Account Activity, there is a link labeled "REQUEST MILEAGE CREDIT NOW". This link is pretty good - when I recently used it and entered my ticket number, the automation instantly corrected my single missing segment of a four segment international ticket.
This is a not a missing mileage situation. The OP was pretty clearly on a bulk/consolidator fare which does not qualify for full credit.