Are taking the f*cking piss or what winkje?
Your RX IS DEFECTIVE, NOT THE ESC. That is why 99.9% of other rxs work perfectly fine with the castle escs. If you cant understand something so simple, then I doubt ANY esc manufacturer would want you as a customer- Patrick even explained why your crappy rx doesnt work, because futaba didnt stick to accepted industry industry standards; tell THAT to your little friends while you're at it. You cant expect Castle to redesign their esc because ONE person had an issue? As for not responding to your demands, I imagine its because they wwre too busy making escs and designing new ones, not trying to work out why one person's rx isnt working properly- maybe head over to futaba and tell them the same thing you've said here & see what their repsonce is...
Cant help some people, no matter how hard you try, better off just ignoring their ignorance of the facts...