Does anyone have a contact number or email for this Amazon Warehouse?

I have a package with FED EX, who have tried several times to deliver here but says there is no one in and now are refusing to deliver unless I give them a contact number. This is crazy considering this must be a 24/7 operational warehouse and you would think Fed-Ex would have other deliveries there...Got 24 hours before Fed Ex move my stock to an overload facility where I am told it will disappear!!

Thanks