As I understand it, OP has created multiple accounts with similar email addresses looking more or less the same, indicating that he was trying to get the bonus on all of them (all but the one he was "caught" with).
Right, and they would have some justification of forfeiting winnings had OP used a bonus on this deposit cycle, but OP claims that they did not and Bitstarz did not refute this. Rather, they chose to victimize themselves.
Gotcha, makes sense. This makes their point even more ridiculous.
@Bitstarz: got anything to say? How do you plan to proceed on this?
Edit: sent them a PM, asking for a reply here. They should take this a bit more serious, imho.