are they legit? i havent received any email 
Yup. I got paid back within about 5 minutes of replying to the email.
If you didn't get an email, write support through the site, they'll get back to you.
I also received a prompt refund so very happy with Halong Mining even though I did not receive the minder they made things right in extremely good time. Good think I did not order T1 as T2 out but price of all the miners will still drop I think so going to wait it out.