We subscribe to PowerBI Pro through our Office 365 subscription. We no longer have any way to create a priority support request, even through our O365 admin panel.
Our account has been moved to the concierge O365 service which requires us to first escalate a ticket through O365 support. They know nothing about PowerBI. They try hard and therefore it takes an hour before anything can be escalated up properly to the PowerBI support team.
Please make it easer for us as O365 Power BI Pro subscribers to get the support we need!
Also please update the following post: https://powerbi.microsoft.com/en-us/blog/how-to-create-a-service-request-to-contact-power-bi-support/
It is no longer accurate as many users have been moved over to concierge and it is impossible for us to submit tickets to PowerBI through this method.
Chris