You will have to explain this words: "not getting your deposit refunded"
most reputable casinos would void your wins and refund your deposit when they close your account for breaking the terms (if you are not up money, obv).
if you have read betpanda terms before signing up, you would have known you won't get anything back.
and since you do arbitrage/value betting, which they clearly don't like, you should have expected they will take your money.
As you can see, they stole all the funds, including the deposits.
It's curious what you say:
They would void your winnings and refind your deposit (unless you are not up money), in that case they don't void your bets.
It doesn't make sense. You, as a company, should do the same against punters whatever the result of the punter.