Yesterday i have to talk with them for a minus thing and man they were really fast not only to serve me but also for solve the problem it was like only 30 seconds of chat and the issue was resolved.
I could also attest that based on my personal experience. I have been using SB but not actively using now, but before when I was actively using it, everytime I have a problem and talk to the support, problem solved in a instant, like an instant, they never let you hanging. This is not a paid comment, just my personal opinion and just try to share how wonderful my experience too.
I can compare them with the sportsbook I'm using now as when you talk to the support, you need to line up like getting a number and wait for your turn. I will not disclose the name though but I can really see the difference, now if you'll ask me why I didn't stick with SB only, that's because it's a fiat sportsbook and it's cheaper to make deposits, and faster as well.
Still we have huge difference between fiat and crypto casinos but if we have activities like these and good work from the crypto related teams hopefully all will be on level for this community.