At least I already clarify certain things to avoid entering assumptions or predictions (post # 4) that are made from the outset, but it leaves two Turkish exchanges open without specifying names.
In any case, wait for support to respond, not only this any support, very rarely get the timely response in less than 1 hour, in normal times for this type of case it usually takes between 3-6 and up to 24 hours. (According to their op they already did it)
BUT reading your OP carefully, you say "that you were not notified of any prior notice or suspension with your deposits." What your mean by that is that you expect to be notified before you make the withdrawal, why does it happen right then?
The answer or responses can be several, one of which is where your funds come from (eg post # 1) but with your answer, you show that there is trust and that this is not the problem, in fact what could be the most serious problem, It includes money laundering, etc., among the possible causes, but you have already overcome that obstacle (according to your post # 4).
But it contradicts itself because in the OP you say that they have already notified you that your deposits are blocked, that is, they also responded to you.
The second cause, which sometimes results in being the first, is the withdrawal amount. It is stipulated in the "Exchange - User" agreement, that for certain amounts the company has the right to freeze its funds to carry out verifications, among them the KYC.
This that could be your salvation is definitely not, because I perform KYC and the answer they give you is that your assets are suspended.
Actually it is a very cumbersome thing to read to him, since although everything is understood, it is confusing and it is necessary to read very well to extract the true idea from his words. Because I say this, because after all, you finally give up and want to sue but it doesn't matter if you proceed or not.
If you think you are right and there is injustice, do not give up.
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However I must be objective and tell you that there is an agreement between the parties; "Exchange - User" that agreement is the click that is made at the time the contractual clauses are read and that it is the success or differences that may exist between the parties will govern.
Right when you accept that agreement, it is your "digital signature." There are things like what is happening to him:
Check KYC.
Freeze assets.
Lock Assets.
Ban accounts.
Minimum withdrawal amount without KYC.
Fee, etc.
There are many considerations, for example it is not the same to say, "frozen assets" is supposed to be temporary, to "blocked assets".
By the way I am not on anyone's side, I just try to analyze things with the little information that has been provided, by the way all with no support but to believe in your word of "Trust"
, at most i can sue them in my home country and get their website blocked which won't help me anyway.