What coin you deposited there and have you try to contact them through support email? I'm not really often to use this exchange, only use it few times only to sell some coins that I bought from ICO. I had maybe similar issue with you when my deposit is not showing up after the transaction have many confirmations. I need to wait for few days to see my deposit, I think there was an issue with the deposit system.
They are getting huge money on the trading fees alone, now there are deposit fees too (this is the first time I am seeing something like this) and these fools still cannot do anything properly. I have paid the $50 (!!) fee just to make a deposit, and now I am supposed to email them and kindly ask to transfer my funds into the exchange wallet which are missing for 3 days already. Some others are waiting for more than a week. We need a decentralised solution ASAP, they see that the demand for exchanges is huge but the supply with is low and this is why they are robbing everyone while they can.
If you want to make a deposit on any exchange - make sure you check their twitter and bitcointalk topic for recent complaints, don't be an idiot like me.