What do you mean lots of work? They replied to a few customer service responses and then sent an email with some proof to the relevant authority and got paid. That's a good amount of money back for a fairly small amount of work.

Honestly I'd spend a lot of time even fighting to get $5 back from the company. Sometimes it's just about the principle of the matter and not wanting to be another person they exploit for cash. Because if they do that to 10,000 people that is a lot of extra money they just scammed. I don't like letting companies get away with abusing me like that.