Thanks for sharing all your experiences.
I am glad that this problem is not unique.
I made the ticket and they already replied, but the reply is quite poor

This withdrawal has now been reprocessed, please allow some time for the funds to be received.

Our apologies for any inconvenience.

Sincerely,

CoinExchange.io Support Team

Allow some time is very vague (are we talking about hours, days or weeks?)
I will wait it for 1 week.
It might be totally true about the fact that they use customers coins to setup a masternode.
I never trust the Exchanges, but too bad I have no other choise then use their service.