Pre-ordered a couple of meals from the High Life café on the way back form Greece last month. As part of this, a £2.50 flapjack wasn't loaded, so I dropped them an email just asking for a refund of that item (some would say that was a bit petty). I received an email a couple of days ago with a generic response, but giving me 10,000 avios!!. It's massively more than anything I'd expected, so I'm very pleased!