Originally Posted by
sbm12
Looking at the list of fares from KVS, it seems that your infant purchased a Z fare (5,430 * 10% = 543, which is what you say you paid). Did your infant get to sit on your lap in BF??
The OP didn't mention an upgrade, but if that was the case, then he was charged correctly for the INF ticket, using 10% the lowest applicable Business-class fare (in this case Z234).