I got charged for a subscription that I didn't buy
I got charged for a year subscriptions to premium photo collage maker on the "collage maker - mixgram editor" app. It was $34. I never bought a subsciption to this app, especially not for a year. I cancelled the subsciption the exact day it was billed (today). Is there any way to get this money back or am I just scammed out of $34?
iPhone 7 Plus, iOS 11