I want cancel the payment monthly fee for support my iPhone please stop it you don’t allow reduce the amount of $5.99in my account I am complaining about that if you continue it

I’m going to cancel the monthly fee for support my iPhone.$5.99

Am not satisfied with my iPhone and you reduce monthly fee for support my iPhone $5.99 .why???you doing this?you don’t allow reduce this amount and send me a monthly recipe. You have to return to my account all reduced.my iPhone doesn’t cost 5.99,you withdraw soon as well that amount of my account monthly.