I can see how hard you've tried here, @gttan89. 

I completely understand your urgency in resolving the issue with invoices in QuickBooks Self-Employed. If I were in your shoes, I would also be eager to have this matter resolved quickly. However, please keep in mind that our live support operates on a queue system, and because there has been a recent surge in similar issues, we are receiving a large number of calls and chat requests. As a result, the queue has become longer than usual. Please be assured that we are making every effort to address each request as efficiently as we can.

Also, I'd like to recommend getting in touch with them within their business hours ( M-F, 6 AM to 6 PM and Saturday, 6 AM to 3 PM PT) so you'll surely get assistance.

Moreover, if you wish to add sales tax to your invoices in the future, feel free to use this article as your reference: Manually track sales tax in QuickBooks Self-Employed.

I know these are trying times and we appreciate your patience while we're still working on this. Should you need any updates about this investigation, please don't hesitate to leave a comment below. Together, we can get through this. Keep safe.