I bought str8ts 6x6 and it keeps crashing everytime i load the puzzle u were just on. The only way to fix this is to delete and redownload which will require you to start from the first puzzle on that set again. This is the second time it has happened. So, how do I contact apple for a refund?
http://www.apple.com/support/itunes/contact.html?form=app_store&topic=App%20Store&subtopic=Troubleshooting%20Applications