How to report a deceptive in app purchase
When you open the App Store, near the top on the right is a link to support. This takes you to iTunes support where you can search or submit a question.  I searched on your question and found the following:


  Contact the iTunes Store Customer Service department using the form on
  their   Support page (select the category and subcategory closest to
  the issue you're reporting and you'll find either an "Express Lane"
  button - just follow the instructions to get to the contact form - or
  an "Email Us" button) and explain your situation to them.