You might not be a scam but you are acting like it by having a multiple same case of freezing user funds without leaving a clear explanation for your action. This will be easier to digest from the user point of view if you will notify them through email the reason for your actions like suspicions on the user activity since you already done the punishment at the first place.
Leaving players high and dry after your action and giving an excuse for having a heavy work load is surely a troublesome.