Hi, @ThisisBS2.
Welcome and thank you for posting here in the Roku Community!
Thank you for letting us know about accidentally using an incorrect email for your subscription.
To cancel the subscription, we suggest contacting our Account and Billing team to locate the account associated with the subscription. Kindly visit our Account and Billing Support page and choose the "Account, payments & subscriptions" category. You should have the option to talk/chat/email with one of our live experts.
We hope this will be sorted out soon.
Regards,
Reynan
Reynan L.
Roku Community Moderator