You can convert your USDT to LTC (lowest tx fees out of the accepted coins) and then try xchange.me, https://kycnot.me/exchange/xchange.me
Edit: Check other exchanges on there too to choose the best most fitting one, as I'm not sure if xchange.me is that good
Haven't used it, it looks good however on kycnot.me it says "not verified" so I assume they've not tested it. It'll probably be a safer bet to use a verified one.Have you tried it? Why do you think it's not that good? Curious.