Unfortunately I've been scammed as it seems.

I transfered XRP to my Cex.io account.
A few minutes after I made the transaction, the Ripple network confirmed my transaction.
Now hours later, my XRP is still not credited to my account.
I tripple checked the deposit address and destination tag. - all correct.
The customer service does not respond. I would recommend you to stay away from cex.io

They write in facebook, they feed with promises, no one enrolls xrp ...
This is very sad, here is their link
https://www.facebook.com/pg/CEX.IO/posts/?ref=page_internal try to write there too, in the forefront you need to keep from this as far as possible..