B&H Video is a business located in New York and correct me if I'm wrong but the state is in lockdown mode, so its quite probable that there's no one working to handle the orders.
They're great guys there - I wish them the best right now.
From their web site -
You may continue to order online or by telephone.
We also continue to offer contactless pickup for online orders at our 34th Street location.
Our sales and customer service teams are available to answer your questions via phone, email or Live Chat.
To our B2B customers: all of our corporate, government and education eProcurement portals remain fully operational.
While B&H and our shipping partners are doing our best to get your order to you quickly and safely, we appreciate your understanding if we experience any delivery delays. We also appreciate your understanding if it takes a few extra days to process returns.
The B&H NYC SuperStore will remain closed until further notice.
We continue to operate our warehouses at reduced hours with extraordinary safety and sanitary procedures to minimize risks. We have fully shifted our customer service, phone and all office teams to work-from-home. Our employees are determined to continue serving customers when we are needed most.