I can't blame the casino for a mistake you made three times in a row, and I don't understand how you could have made the same mistake again. However, I can't find any explanation for why Roobet wouldn't refund, especially now that the Tron network is supported and funds can be accessed through the automated system, despite the fact that this was possible manually even without the supported network.
On the other hand, a whale player who is wagering millions of dollars is supposed to be taken into account. Why would I, as a casino, lose a loyal player willing to deposit millions just to receive a small amount that he accidentally sent? Honestly, I no longer see the logic behind all these practices that are supposed to stem from professionalism and experience in the field.