Problem with currency conversion and price informed on site

I'm having problems with the charge of my subscription plan, I paid the one-timed amount of R$ 67.00 as shown on the website and in the attached print, but the charge came to me in the amount of U$ 29.99, which converted exceeds R$ 112.95. In addition I bought Cartel Coins in the amount of R$ 35.00, but that came with a charge of U$ 19.99, which converts are worth R$ 75.30.

In short a transaction that should cost me R$ 102.00 and I was charged a value of R$ 188.25.

I feel injured.

Please do me a favor, since, besides, I support the game and the project seasonally, but a long time ago.

May the Force be with my money.

I'm sorry for my poor English, but I used Google translator.