Maciej, first educate yourself before you book or write, bullet train are in extreme high demand, they are open for sale 45 days before departure and are sold out within one hour in high season, so next time book in advance. Second learn to be greatfull for a team that managed impossible by securing your train tickets even on last minute, third open your eyes all airline companies & hotels practise overbooking as they know there will be last minute cancelation, last but not least we take a calculated risk in business that allow us to serve hundereds of tourist with last minute request like yours, if we were to stop this you would have never seen samarkand in peak season on a one day trip, so think before you write next time.