if the OP still does not find a solution to buy USDT, then I suggest making a offer thread in this forum, maybe on a service board or marketplace. do not forget to use escrow services, I think there are many people here who are ready to help you and you can buy it using paypal, perfect money, western union or any payment services that you two agree later.
Do they sell USDT? It seems to me that by putting down the possibility of officially registering on the stock exchange, for example, on BitFinex, which today has opportunities to use such things.