Business ProfileforAir Ticket Services LLC

On 3/4/24, I went online to SWISS Air to confirm a reservation I had made with them-via their partner airline, Uniteds website in late January and noticed my seat reservations were missing. It was hard to find a SWISS Air contact # on their site, so I googled SWISS Airlines and an 800 number popped up. The person answered "SWISS Air." I explained my seat dilemma, and they asked for my rez info, which I provided to *** (ID#*****. He said I had not reserved seats & because I was calling so close to departure, there would be an additional $171. 57 late fees. Because he insisted he was with SWISS Air, I assumed I had to pay late fees. On 3/15/24day before departureI reviewed my cc statement and noticed that seat fees were listed by SWISS Aira separate $171.57 was by SWISS Air ATS. I again & **** who insisted he was a ***** Air rep did not see that charge. I said I would call United and contest the charge. He then asked for my United confirmation. He said he reviewed my ticket & that due to an issue--he said I booked my ticket with United right SWISS Air had a fare increase, so I now owed $598.98 more & would have to pay at the airport if not now. I was incredulous. He was apologetic but said nothing could be done. When I complained more he said his backend office had an update: (1) they would waive the $595.98 and (2) they found the $171.57 charge, which was legit. I asked for a contact at SWISS Air to whom to complain and he provided *********************** I sent a test email and it didn't bounce back so I planned to contact him upon my return at the end of March. I decided upon my return to call SWISD Air at a number I found on their website when I was in *********** and needed a local number. When I explained all of the above to the agent, she said: (1)My seats were booked online on 3/4/24. No," I said, "they were booked with one of your agents by phone. She insisted they were booked online. (2)When I asked about the $171.57 fee, she said that SWISS doesnt charge a late fee for booking seats.(3)When I asked about the $598.98 charge that **** was trying to make after he was looking at both my SWISS Air and United reservations, she asked, first, how he could look at my United reservation and then she said:a.They are not authorized to ask for another airlines reservation number; and b.The cost of the flights that I was charged through United were 100% correct and there is no such thing as an issue between United and SWISS Air that would ever result in a fare-change by SWISS Air after a seat was purchased on the United website. She counseled me to contact my credit card provider. This company is BOGUS and fraudulent. I asked multiple times if it was SWISS Air and each time the agents said "yes!" They lied many times and re stealing money from people. I have opened a case with my credit card in the hopes I can refuse to pay this terrible company fees that they cheated out of me.