You should link this two transactions in Cryptopia support ticket:
http://chain.nem.ninja/#/transfer/b962aa70d4218a2e86cf0a68f57e1e4758b5062117ac547c082cf0f2da3a6a221
http://chain.nem.ninja/#/transfer/48c57677e89a1f3b82af4f3a03f4ab6b2fa3395ad5f3189c5fcf05a6a58cf5ca1
And you should tell that XEM was sent by mistake as second level mosaic from deptowallet.
It can bee seen:
Mosaic: nem.xem
Total Quantity 2840.000000
If you like you can redirect support guy to this topic (please link your post directly). He can also ask me question if they like because this is not standard user error.
Regards