Hello everyone this is my first time here on the forums and if you guys know something to help me or even guide me with this problem would be nice

I got a problem with the payment with 50 $BRL funds in my account (just wanted one payment of 50 $BRL credits). I tried multiple times to buy the credits and i got some kind of server error, only the last payment was processed ( i got the confirmation email), but there is the others oders still waiting for the checkout in my account, i didnt got the confirmation email for those but i want to know if i can cancels those for safity, i would hate to get charged multiple time for the same thing for a server error( i dont want to sound rude, i'm just kinda scared of being charged multiple times by accident).

thanks for yout time.