TelegramMember.co complaint: Blackmailing by offering Telegram Channel Members services

Dear Sirs,
there is a company on the net, www.telegrammember.co, which offers new members for Telegram channels like 50$ for 10,000 new members. Actually, at first there are new members like offered in a telegram channel, but after a few days all are gone. When trying to get in touch with them, they don’t answer and don’t care. But when filing a dispute at PayPal where the payment was made and funds returned, these guys at telegrammember.co acting very nasty and threatening to block and closing down that channel.
That person calls himself Michael and his Telgram user ID is @MichaelShf and under this number their is another Telegram account of @pooyashf by a guy called Pooya. Obviously these guys are not in the US, but what they are doing is blackmailing since they are not willing to solve these problems by chat messages and they are threatening like we will delete your account and channel soon when not paying 50$.
Please take legal actions since we will have our lawyers already working on it and reporting it to police and other authorities.
I am looking forward to hear from you soon.
Best regards

PS: The phone number of that company is in Greenville, Michigan, but these guys operation obviously somewhere in the Middle East