The short story: Delta Airlines Sucks
We booked several legs of our Seattle to South Africa trip on Delta and several other parts on their partner, KLM. Without fail, the KLM experience was very pleasant and everything we could have wished. Also without fail the treatment we received from Delta was nothing short of shocking. Delta employees were rude, ineffective, and either unable or unwilling to do the simple things required to do their jobs in a reasonable fashion.
From the ticketing agents (who took nearly two hours to print out our tickets AND double charged us for the infant fee) to the flight attendants (who were grumpy, rude, failed to bring an infant seatbelt, and one who actually fell asleep during take-off!) to the gate agents (who sent M running across the airport to fix THEIR mistake) to the finance department (who refuse to refund the double charge) we were not impressed.
As if that were not enough, all three adults (but not the baby) got serious food poisoning from eating the airline meals on our last flight. We didn't eat anything else, so we know it was their food. Delta is in serious need of a figurative smacking. I will be doing my best to avoid buying tickets from them in the future.