This is a failure by the ticketing carrier, e.g. AV. Even then, OP has not advised as to whether an e-ticket, rather than a reservation, was ever issued.
This is not a customer service, but a legal prohibition. Thus, TK was prohibited from carrying OP on the route and thus it rightfully did not transport him. OP's anger is misdirected.
Hopefully a mod will move this to AV/