See this TurboTax support FAQ for how to cancel an Advantage subscription - https://ttlc.intuit.com/turbotax-support/en-us/help-article/change-service-level/cancel-turbotax-adv...
For any type of billing issue you must contact TurboTax support. Use the key words Billing Issue
Support is open from 5am to 5pm Pacific time, Monday thru Friday
See this TurboTax support FAQ for contacting support - https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/turbotax-phone-number...
Support can also be reached by messaging them on these pages https://www.facebook.com/turbotax/ and https://twitter.com/TeamTurboTax
