You will have to cancel the current membership and then you need subscribe to a new membership with correct currency. You will also get the refund for the current subscription as you will cancel it within the 30days of the purchase.
Please follow the steps to cancel the subscription and get the refund:
For refund you may contact Customer/Chat support:
Let us know if this helps,
Thank you for your reply. Unfortunately it turned out that I can't pay in dollars from my country, but I assume that in other case this would be correct solution. Thank you again. Best regards.
Please specify the country from where you are trying to place the order for Creative Cloud?
You may select the currency by cliking on the link mentioned below to place the order for CC membership:
I’m from Poland. I was chatting with support today. Unfortunately the only available currency for me is Euro.