Duolingo didn't send me a renewal notification and then charged me $100

I did the super duolingo trial since they are always pushing it with the ads and I requested a 2 day notice before the renewal since I can't afford the subscription. All of a sudden today with no warning I get a $100 charge on my apple account. I looked at my duolingo account and it still says it was going to notify me, I looked through my email and nothing they just didn't send the reminder and charged me out of no where.

Now I'm waiting on Apple support to get back to me about a refund, this is so frustrating, any one else have this happen? Any luck with the refund or am I going to have to fight with my bank on this :(