you can complain to UKGC but takes ages. better to stick with faster paying sites
Bet365 always pay me within 2 hours using visa direct. maybe csts a bit more in juice but worth it for peace of mind
been playing there since 2020 and no issues with withdrawals so far. took forever for kyc when i first tried to cash out but got my money eventually.support is pretty decent too compared to some other crypto sites