I think you should wait for replies from the cryptopia support team. Which is important when you deposit eth, its eth address is given by cryptopia and you've done the right thing.
Yes, unfortunately they're the only ones now who can help you, so be patient, always use one reference number for support and keep you support questions tight and to the point. Just send a reminder every week or so... but be prepared to wait for a very long time. Cryptopia is known to take very log times with support requests. As people mention, next time be extra careful, Only use deposit addresses given, and always always always double check. Crypto is great but people must be extra careful when making transactions. Spend an extra 15 seconds to double check everything.