duplicate purchase, my account has been charged

Hello, I have purchased another of your plugins, but I have noticed that 2 have been charged to my account, please would you be so kind to cancel one of these licenses and return the money to my account. I really don’t know if it was a system error or mine, but I don’t need the second one, with a license for me it’s enough.
return this license, I will use the other one. thanks so much