Why complain? Um, cuz I shelled out a mint for the RFX and it doesn't work as advertized?
Given the amount of grief and pain this is causing you and assuming that EMU are not going to do anything about this (which is in my opinion a pretty safe assumption) would you be better off selling your RFX and ridding yourself of this burden? It seems to me that there are reliable work-arounds for the issue you have raised. If you are not interested in using them, then I've seen RFX cards go for 400 to 500 us dollars. With that kind of money you could upgrade to an Emulator X or something else.
Just some options. Hope this helps.