money deducted from my account

Please take action against Smule Karaoke app in iPhone. I purchased VIP account for rupees 550 rupees for one time again without any of authorization from me they have deducted money twice from my account. This is ridiculous and must be charge case for this application. I am suggesting to every my friends to caution about this application. PLEASE DONT DOWNLOAD AND GIVE MONEY TO THIS APPLICATION !! THIS APPLICATION EMPTY YOUR BANK ACCOUNTS....!!! DONT USE SMULE APPLICATION.