Keeping aside just for a moment what they did pay out or not (or allow you to deposit or not), did you breach any of their terms and conditions? Whether you took a bonus (even on one occasion no matter how small) is not the point, the main question is about you having just one account or not. If you had more than one you would have been in breach of the terms that you signed up for when you registered on their website.
I could have made these bets and played roulette in the casino around the corner from my house, but it occurred to me to trust this betting house so as not to leave my house and since I had money in cryptocurrencies, I had not played for almost a year with my account, I even recommended the casino to some friends. How do they think that after 1 year he would scam them by making legitimate bets? I ask myself this again and again, how is it that they pay me the first bet won in NFL and when I win the second one and then roulette, right? Because, if I failed to comply with their terms, they accepted my first withdrawal after a long time of playing (which was not automatic and was pending for a few minutes), they waited. I would win again and make x6 the amount deposited.
Even if he breached the rules, Sportsbet can't steal his deposit. If he deposited $100,000, can Sportsbet take his money if he accidentally opened a 2nd account? The rule that Sportsbet has in place would never stand up in court. Some rules basically say that they can steal your money at their discretion. These are invalid.
19. Cancellations, Suspensions and Closure
19.1 Without restricting our ability to rely on other remedies that may be available to us, we may suspend and/or terminate your account, cancel any outstanding bets and/or confiscate any or all funds in your account at our absolute discretion if:
(i) we suspect that you are engaging in money laundering, illegal or other fraudulent activity while using our Website; or
If you read outside of BCT, such as Trust Pilot, Sportsbet uses 19.1 a lot to steal money. As I said before, this isn't limited to Sportsbet. Both Stake and 1xbet use the rule without proof to the same degree.