How do I file a complaint against a developer for unfair business practices and pricing policies?

I've never played that game so I don't know what Terms and Conditions you agreed to when you started playing it or opened an account. It's likely that you agreed to a whole lot of things without actually reading it (most people don't).

You could certainly hire a lawyer to review those Terms and Conditions and the legal documents they sent you. They could tell you how to proceed. Depending on the amount of money involved, you might be able to sue them in Small Claims Court.

Only you can decided if it's worth that much time and money.

You may also want to write a review for the app in the App Store to alert other users. In some cases developers will also see your review and have an opportunity to respond. Many times that are more willing to resolve a problem when your issue has been viewed by other people.

IdrisSeabright wrote:

It's likely that you agreed to a whole lot of things without actually reading it (most people don't).

A few years ago one company added to their terms that you would give them your first born. No one noticed.

Lawrence Finch wrote:

A few years ago one company added to their terms that you would give them your first born. No one noticed.

That's crazy!

Way back when, there was a Dilbert cartoon in which Dilbert finds out he agreed to be Bill Gates's towel boy. But your anecdote is even better.