I was searching for a good sports bet with crypto arena.
I sorted out two sites -- everybet.io and sportsbet.io because of their first bet refund bonuses.
I got my first bet refund at evrybet.io without even asking it (within 10 minutes) support was super cool and friendly.
But even after one and half day I got nothing in sportsbet.io and when I asked for it in chat some dude with ellon musk dp very rudely replied that I am not eligible. When I asked him why he told me he cannot have that information, lol...
Note: they let me withdraw my winning, which I bet with high odds to become eligible for free bet.
Many people have already said this, but I will make a summary here:
1. Sportsbet.io is a pretty trusted casino and the bonuses are so small that no serious casino would bother to deprive people of that anyway. There was a scam accusation, that's right, but the case was pretty disputed, so there is no strict answer whether it got resolved or not. I think it did.
2. If you want to open a scam accusation, make sure to include more detailed info and screenshots.
3. Go through their terms and make sure you are really eligible for the bonus.
Some pieces of advice from me:
1. Contact them via support email or on bitcointalk, ask them to provide the reason for not giving you a bonus.
2. I see that the bonus is received in 48 hours. Depending on time zones, perhaps this time didn't even pass yet, so make sure you've waited enough.
Good luck!