You will need to contact US TurboTax support for assistance with a refund. Use the key words Billing Issue when contacting support.
TurboTax 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
Go to this TurboTax Canada website for assistance with a Canadian tax return or the TurboTax Canada editions - https://turbotax.community.intuit.ca/turbotax-support/en-ca
