Bureaucratic deadlock between agencies and airlines leaves travelers unable to modify or add seats on agency-booked flights

Summary

Travelers who book flights through a package agency (e.g., Turkish Airlines Holidays run by a third party) get trapped when they need to change or add something the airline's own site clearly offers — like buying a seat for a 13 kg toddler who only has a lap infant ticket. The airline says it cannot change agency-issued tickets; the agency says the request is 'under review' and never delivers a price, while the airline site shows available seats the traveler is not allowed to buy. There is no direct channel, no transparency, and no accountability between the two parties, forcing families to fly with unsafe or inadequate arrangements. This is a recurring, high-frustration logistics deadlock with no neutral resolution mechanism or unified modification path.