You are not being forced to bet, but it is all about rules. You made a deposit means that you are going to bet, if there is a betting limit then you should accept it as most other bookies has their own betting limit. Once you are limited and you want to withdraw what you deposited without making significant wager, no sites will allow that. You lost your money because your bet(s) were lost, if you won the bets will you complain?
The proof did not satisfy any of us here, because we understand how a casino works, you are not forced to bet but there's always a minimum wage and you don't deposit and withdraw by playing the minimum amount it will set an alarm on that account, it's stipulated in the rules that you cannot use casino for money laundering and OP action is considered money laundering.