First of all there was no "map hack," there is an issue with the server host and it's being looked into.
As for your coins, if you really want a refund then you can ask for one here: https://pokemonrevolution.net/forum/viewforum.php?f=71
Keep in mind however, that you will be able to log in again soon, server reboots don't happen too often but like another user said it 'usually about 2 days for server restarts.'