gbo inc scam artists miami, Florida

I also received an "offer" from gbo inc. And it also looked more like an invoice than an offer!
I was already dealing with the us trademark office when i received this so-called offer.
They did not have a phone number on the letter so i could talk to them in person.
They used up half of the paper giving me info on how to get my money to them though!
They want $960.00 to do what i have already paid an attourney to do!
Do not send these scam artists any money they are very shady and i hope someone makes them pay for
Their actions!!!!!