A simple Googling shows up lots of people complaining about Mudrex withdrawal issue...

1. https://www.reddit.com/r/CryptoIndia/comments/1freuya/mudrex_withdrawals_question/

2. https://www.reddit.com/r/CryptoIndia/comments/1bqgxee/mudrex_is_a_scam/

3. https://www.reddit.com/r/CryptoIndia/comments/1dispjs/mudrex_withdrawal/

4. https://www.reddit.com/r/CryptoIndia/comments/1f5b4ih/delayed_usdt_withdrawal_mudrex/

5. https://www.reddit.com/r/CryptoIndia/comments/1fv3ug9/usdt_withdrawal_delayed_in_mudrex/