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Regrettably, I believe that the club, in the circumstances, is likely to be to retain the money that you have paid. This is because they asked for a sum of money, and you paid it, whether they then use that the purpose for which it was paid is irrelevant from a legal perspective.
However, it is a small amount, and you might be able to negotiate repayment of some money, given that it does seem very unfair to them to be able to retain it.
I say this is based upon the fact that you could issue a small claim, in the Small Claims Court, which would be dealt with very quickly and informally.
There would be no appreciable risk to you of lawyers costs being ordered against you so long as you behave reasonably in the conduct of the court proceedings in the small claims system.