I begged and pleaded to them and over and over they rudely denied my request. After about 5 minutes they decided to offer me a refund of my balance (which was only 0.5 BTC) if I made another deposit of at least 1 BTC and accepted the bonus terms again. I said are you f###ing kidding me?
That was not bad offer from them as you have lost half of your bonus coin right? i am sorry for what happened to you, mostly deposit bonus have a very complicated rules and users did not read the rules carefully too which make it more complicated to solved once user want to cancel the bonus.
Bitcasino.io is one of biggest and trusted gambling site, they wouldnt ruin their reputation for your 0.5 bitcoin, imho it was your fault , next time would be better you don't use any deposit bonus that wager required. Goodluck