I don’t care what and where they spend. I register at a casino and want to easily withdraw my funds and play, as easily as they accept deposits. There are a lot of casinos that check your ID within 5 minutes.
By continuing to complain, it won't help anything in the KYC process on your account, maybe the Duelbits team needs time to complete it and process your KYC, no need to worry about your money, as far as I know Duelbits is a big site and has a reputation on this forum too so I think your money will be processed eventually if they finish processing your KYC or there is a queue.
I think a casino that processes 5 minutes could be a small casino that doesn't have a lot of users so there aren't many queues to process KYC for their users or there is indeed a violation that must be checked from your account so that makes the Duelbits team check it in depth, so in my opinion give them time and you need to be patient for that, I'm sure your withdrawal will be processed in the end if everything is finished.