Due to privacy and security issues, corporate policy prevents me from cancelling your account from the chat service.
However I can give you two simple options here to cancel your subscription:
Simply log into your account here: https://www.dmca.com/Billing/
If you pay by Credit Card - click "Deactivate Protection Pro"
If you pay by PayPal - click "Unsubscribe"
If you have any further questions about these features, please submit a question and we will be happy to answer.