Sorry for your lost sir but as a bettor you have the responsiblity to read all the terms and condition of sportsbet.io and you must accept the terms if you want to bet. The one you quoted is stated in their terms but you we're saying you sent all your documents let's just wait for their response
I called it stealing,it's such a huge amount for such a lame excuse no bettors would want to lose his winnings and his money this way,they should have a good reason why they cannot return the money or this is the end of their business,this case will haunt their business until it is resolve.