NO STARS.\n\nTheir check-in staff is beyond RUDE.  I wish I took the little miserable Filipino lady's name before I left.  Also the miserable fat lady that accompanied her.  They treated every customer terribly.  I couldn't believe Delta Airlines allowed this type of service.\n\nTheir \"e-confirmation check-in\" service is flawed.\nEveryone that checked in on their mobile devices and used their economically friendly way of checking in by showing their phones instead of using a physical ticket had their tickets CANCELED! I was with a few other customers that had the same issue.  We were one hour early, but because they didn't know how to help us, it led to automatic cancellations.  That wasn't the bad part. It was their customer service, or lack of.  The lady at the desk was beyond rude.  She did not offer any solutions or even a slight sign of sympathy or concern.  The ticketing issue was their fault, and they had plenty of time to help at least 4 other people, but chose not to.  This led to customers sleeping at the airport terminals for hours hoping for an opening on the next few flights.  The experience was unreal.  I fly through this airport for business and vacationing numerous times a year and have never experienced this type of horror.  When I refused to walk away after they told me my ticket was canceled they threatened to call security.  I literally walked away in tears of frustration and watched them do the same to the other people that were robbed.\n\nTheir flight crew were great though.  They tried their best to squeeze me on a flight and the girl that worked at the gate was very sweet and professional to everyone bombarding her with questions.