game pass problem

hello, i buy 3 moths of game pass + gold in offer for 500 chilean pesos what is 1 dollar in U.S.. but it take me 3 times money and also 2 time for converting to dollar.

So together it take me 3 500 chilean pesos together. i was looking for it in conditions of contract but it says just 500 pesos not 3500. So maybe im wrong or i understand something bad;

thank you 4 answer :]

:)