That is an excellent example of communicating.  It appears that coinmarket have no intention what so ever of doing something like this.

I couls live with a nominal percentage reduction if indeed it is the error.

Perhaps the thief that posted about withdrawing double BTC in this thread would be kind enough to give it back to coinmarket if something like this can be done here too?

Its starting to smell a lot like coinmarket has been hacked too, but rather than try and fix this open and honestly, they post about bullsh*t patches and trading opening times etc etc....

That other exchange now has people trying to find the thief and taking it out on them, while still having respect for the exchange because they came clean.

Coinmarket just has people angry with them because they are saying nothing at all.