Subscription hike without notice

I woke up this morning with an email from Apple saying that Apple Arcade is how 8.99 instead of 5.99 per month !!

what a jump !

I go to my account to cancel since I find the jump incredibly high to find out that they have already charged me yesterday… no questions asked, no notice given !! I find this very cavalier!

i canceled but it will only be effective in a month ! Anything I can do ?