Bitcoin Fog. I know that they are pretty shady, i posted what the support sent me in an earlier post

It does smell fishy but I don't know how else they would know that it's me if all they require to sign up is a username and password. And they are asking for such a small amount to be sent there that I thought I might as well try

I was sending them to bitcoin fog (all you need to make an account is a username and password), and it wasn't that much. The support sent me this message

 As an anonymous service we have to be very careful with such requests because they can easily be attempts to steal someone else's account, or to even simply gain any information about accounts or addresses. (For example whether certain addreses even belong to the Fog.)

Do you have the actual address that has sent the deposit transaction? Can you send a test transaction from that exact same address somewhere in the amount of 0.00007031 (or more but with those last 4 digits) so that we can know that you own it?

So I created an account at a site and sent by bitcoins from my wallet to that site, the next time I went back there, it said that the credentials were incorrect. I wrote everything down so this was weird. I contacted the support and they told me to send a specific amount to the address so i can prove that I own the account.

I am asking for a loan of .00015 BTC
I will pay you back within the week or whenever I get my money back at .0003 BTC.

If you could please let me know and I will send you my wallet address

Thank you