There is one rule in this business, which is never play high stakes in small casinos. I don't understand why people keep on doing this.
Verification process doesn't take weeks, specially for small casinos because they don't have many players, so any delay is just a dirty tactic they use to not pay.
Also these small casinos operate as ponzi schemes, they pay your winnings with other people losses, and when they are short of liquidity or can't afford to pay, they will drag you for weeks for the most stupid reasons until you lose your money, it doesn't matter if it will take weeks/months. A member in this forum, the past couple of weeks lost 100k because of the withdrawal delay.
Stay away from small casinos.