Unfortunately
Unfortunately, Booking.com shows no interest in the quality of its customer service. If you want compensation for a lost ticket, you end up in an endless limbo: a chat where they use friendly words to pretend they are helping, while you are forced to repeat the same story over and over all day—and continue the next day, too. Calls get disconnected, a new agent takes over and claims to be escalating the case, and then... you never hear from anyone again. You can be certain, then, that you will not receive any compensation this way.