You get on the phone and explain the situation. Immediacy and transparency is key. Here is what I know. Here is what I dont know. These are the people I hav

You get on the phone and explain the situation. Immediacy and transparency is key. Here is what I know. Here is what I dont know. These are the people I have contacted. This is what they have said (or not replied to). Ask customer if they have any contacts at banks, govt, etc they can leverage for you. This is just like a real-life status page. You just need to keep all stakeholders informed as to the status, follow-up, and keep hammering stripe or their agents until you make progress. If you are short on resources, raise that flag to your client as well. Grinding through this to a satisfactory resolution will make your relationship STRONGER because of how you handle unknown unknown's. Building on this -- this is what will go into your future business continuity plan for the future. Anyway, my $0.02