Dear Michael,
I am serious and very much interested to buy your Antminer S9 machines. Please e-mail me at freddavid4@gmail.com and we can go from there ASAP. Appreciate your kind attention and response. - Frederick
Bitcoin.com is just one domain name used to promote Bitcoin. Bitcoin.com is not an official website. Just like nobody owns the email technology, nobody owns the Bitcoin network.
As such, nobody can speak with authority in the name of Bitcoin.