Um... It appears I've fucked up rather massively here.
Thinking as I posted the Football TV guide earlier, "hmmm, those tickets haven't arrived", I then got worried. I couldn't find an email confirmation or owt, so I called the number on arsenal.com and... it appears it never went through.
I'm really, really sorry about this. I take full responsibility for fucking up about 11 people's evenings and as a result, invite all of those who have missed out to watch it at my house, where I will lay on some apologetic snacks and drinks or something.
I'm not entirely sure what I did wrong, but I don't exist according to Arsenal FC and thusly neither do our tickets.
Sorry sorry sorry.