First of all, slight correction to sft42 - it doesn't cost a lot to use the small claims court and, if you win you would probably get your costs back. There is some hassle involved, though. In many cases, just the threat of legal action is enough, so you don't end up needing to go to court. First you need to decide exactly what you want to claim and write to someone at the top of the organisation. Last year I had two successes this way. First, I was stonewalled by Boots Opticians but a letter to a Director got me a free pair of glasses very quickly. In the other case, I was getting nowhere with a Safeway minion but, again, a letter to the Chairman got instant results. Having said all of that, you may not have too strong a case depending on all the circumstances of your situation.