I use twitch app, and sometimes I like to gift subscriptions and buy bits

Buying bits and gift subscriptions with Apple Pay seems to be overcharging when my account e receives the transaction, how long ha this been going on, and since I’m on a limited income, how do I resolve this before the rest of my month charges start coming in

thank you,

fir instance, gift subscriptions cost 5.99 usd, and my bill reflects 30+ usd

If this has happened more than once in the last four years, will I get my money back?

thank you,

nicholas