| I visited Tegel airport for the first time on Aug 30/31, 2017 and it was one of the worst airline experiences of my life. I have traveled to over 80 countries and spent years in the 3rd world and have rarely encountered anything so horrible as Tegel. I was transiting from Warsaw to the Middle East, business class. The flight was over 90 minutes late and I missed my connection, as did many other people. There were no ground staff to help or to direct passengers. We were first falsely told that our connecting plane had been held for us and urged to run all the way to gate C88 on the other side of the airport which we did. Upon arriving at the gate, there was no one at all there and we learned the plane had departed - long before. There were stairs everywhere, no elevators or escalators. There were no clear signs. Airport staff were unhelpful and amazingly rude. As we appealed for help, or simply directions, many airport staff ignored us, others literally turned their backs and walked away. Those that did talk did so only to tell us that it was not their job or responsibility. We were told to go to some place called "AHS" to rebook but no one could / would tell us where AHS was except to say near Gate 57 - however was no Gate 57 and no sign. We were sent all the way back to the side of the airport we'd started at, then sent all the way over to the other side again, and then back. Dragging our carryons up and down stairs. It was like something out of Sartre or Kafka - literally "No Exit". After about an hour, a security guard finally told us how to get to the AHS, just two people at a counter with a long line of enraged passengers off of their numerous late arriving flights from Warsaw, Copenhagen and elsewhere. There were no special lines or priority accommodation for business class passengers. Everyone was being treated abominably. The airport seems to primarily service just one carrier (though there are a few other carriers using it) and most of the disgruntled passengers seemed to be from that one carrier, which appears to regularly delay / cancel flights. Dozens of people were stranded in Berlin due to missed connections (and no, there was no weather problem at all that day, sky was blue and clear) but staff were asserting that they could not provide hotel, taxi or meal vouchers because (verbatim quote): "airline [name omitted] is bankrupt." (This assertion was made several times and if true, may explain the terrible state of Tegel airport if this is Tegel's main client.) Everything about this airport was miserable - ugly, shabby, not very clean, and almost unbelievably unprofessional and disorganized. The only place I've seen something remotely similar is in some small provincial cities in the former Soviet Union. If I had not personally experienced this nasty airport, I would never have believed that a leading EU country like Germany could allow such a wretched facility to operate on its territory. It is a public disgrace to the city of Berlin, the country of Germany and to the entire EU. I will never, ever, voluntarily set foot in Tegel again.