Let me post some facts about Delta Skymiles.
#1 Even if your registered for a promotion online or got email or a postcard, Delta will NOT credit the promotion if the so desire, they will give any excuse, the dog took it.
#2 Don't waste your time contacting Delta, better results are achieved when the Better Business Bureau is contacted.
www.bbb.org
#3 Delta's availability for free seats is a gimmick, better off transfering the miles to a hotel program.
When flying get the miles posted elsewhere.
#4 the Skyteam group overall is good, besides Delta and Air France.
#5 Be aware that delta's 800 upgrade certificates apply only to very expensive rates, unlike the rest of the industry, unused upgrades will NOT be converted into miles like all the other carriers.

BOTTOM LINE IS: DON'T FLY WITH DELTA.

I AM A GOLD MEDALLION.