My name is Shawn and I work with this Casino and a few others. Upon seeing your complaint I have spoken to the casino and this is the issue: You won 55 off a free chip without making a deposit (past deposits don't count).
According to the terms and conditions of the casino (detailed in the T&C page), to withdraw winnings from a free chip, you must make a deposit AFTER the free chip was taken, to qualify. Meaning you must make a deposit of a minimum of 25 (again, this is after the free chip was taken it doesn't include past deposits) to withdraw.
Now technically 100 is the minimum amount that can be withdrawn, but the casino is willing to make an exception in your case, and allow you to withdraw the 55.
So to withdraw the winnings, you will need to 1. make a minimum deposit (not withdrawable but playable) 2. Submit the documentation required for a withdrawal (ID, utility bill).
Then the winnings will be sent to you post haste.