I have been booking flights via BA's voyager program on a number of occasions - all very "lekker" and easy to do - until a week ago. Booked JNB/GLA return (via LHR) all went OK as usual - until I saw how much I had to pay for airport tax. Something did not compute - R7.6k on tax alone. So, I rebooked without BA miles. Same flights, same days, and lo and behold tax at R 5.2k. So I call BA and ask if tax would be the same for "normal" bookings and airmiles use booking - "Yes" they say, "no difference at all". So I quizz them on the R2k difference. "Impossible" they cry. So I proved it. Shock and horror. So I say, "So how many people have booked such flights and paid the wrong tax because they did not think to question what they see on the net" ? No answer. Anyway, BA local send my "proof e-mail" BA UK "for investigation and fixing". Got a note from BA UK saying "thank you for your query etc etc, we'll get back to you" - still waiting.......