This all sounds a bit dodgy. This is well beyond volunteering, this sounds like a job. How old are you, and what would the pay work out at per hour for what you've worked? The club seem to be trying to exploit the employment law and save themselves having to pay any tax or NI for you, so I would be careful if I were you.
Beyond that, stop complaining. We've all done our fair share of crap jobs to make ends meet, there's nothing wrong with pot washing. If you've got that much of a problem, provide your own gloves, but beyond that just man up and get on with it, this is what the real world is like I'm afraid, doing things you might not want to do.