Turbo VPN Charged Me by Mistake - I Need a Refund

I am using Turbovpn on my iPhone and today I accidentally purchased a subscription through Google Turbo VPN for 11.59 USD. I did not intend to buy this service and realized the mistake immediately after the payment. Since this purchase was made by mistake and I only paid once, I kindly request the immediate cancellation of this subscription and a full refund of 11.59 USD to my original payment method. I have not been able to contact Turbovpn or Google support yet and I am asking for your help so that this accidental transaction can be reversed as soon as possible. I expect confirmation that my subscription has been cancelled and that the refund process has been initiated.