They are trying to buy you off for just $50. Recently travelled QF Mel-Lhr via Hkg only to find there was no food available on the HKG-Lhr leg due to a problem with the refrigeration. Ok these things happen and the offer of a Tim Tam biscuit really settled me down--not. Got to LHR and was given a voucher for 7 pounds. 7 pounds at Heathrow just about buys you a cup of tea. Complained when back in Oz and got $100 voucher. Better but not brilliant.Airlines need to start to understand that passengers deserve better for the money but not holding my breath.