How do I schedule a callback if I am in Australia with an Australian phone number? Need to have my taxes reviewed before sending to the CRA

I live in Australia and am a non-resident of Canada. I earned some income in Canada early last year, and purchased the Assist & Review package so an expert could review my taxes before I submit them to the CRA. However I am unable to schedule a callback because the online form won't accept non-Canadian phone numbers. The Contact Us form also won't take non-Canadian phone numbers and doesn't have an option for email. I don't even need to talk to someone unless there is an issue, just ned someone to take a look. How can TurboTax be contacted? Thanks.