as you know,my english is poor,When i saw the button "dump" behind my BTC balance, i clicked it ignorantly ,then i lost all my BTC.
Although only few ,but i think I was bullied?

If it was on c-cex they should have atleast give you a warning as in "are you sure you want to execute this order"
Can you perhaps give us a bit more detailed information? Will make it easier to help you.