Open incident for trust center itself from the page.
So currently the AOC Package for PCI compliancy is expired (expired 03/08/2020). There is no link from the page itself to open an incident. It is not specific to any one subscription or user, the issue is exclusively with Microsoft itself. There should be a easy button to click on that page to raise an incident. I had to open an incident from my azure portal with the closest thing I could think would relate.