Virtual office - Phone number verification


New member
I am not US-resident and i have a company in USA Wyoming, and i have a virtual office there.
But now i got a challenge - phone number verification.
I'm trying to pass "business verification" procedure in Facebook, and they require "document that shows that the phone number is associated with the business".
I tried to use VoIP phones, but facebook do not accept Invoices, Purchase orders etc..

Any ideas? Where i can get such document?