See Here... in particular # 6
Also Here > contact the vendor
If you are still disatisfied...
Contact iTunes Store Customer Service:
This site has detailed instructions on how to report a problem in the iTunes or App Stores.
Apple must get thousands of requests from developers every week to have their apps reviewed and on ocassion one can get by them. If the app is truly a fraud as you claim, I have faith that the app will be removed - that is why users like you must report the problem and that is why the support is there for you.