An observation and also a comment on many recent posts complaining about poor service specifically from shooting organisations, gun dealers, Liason Officers, etc etc that are based on people not getting a response from email or PMs whereas a telephone number is available.
Email is an excellent way of passing on information, but one of the worst forms of actual communication. Once people hit the 'send' button they believe they have absolved themselves of any responsibility in maintaining and continuing the communication. How many times have you: said or heard 'did you get my email?'; not actually received emails that people have said they have sent; mistakenly deleted it; seen it on your smartphone and thought I'll reply to that later then forgotten; not checked your spam/junk mail; etc; etc? There are also known bugs in some email hosts that will occasionally reject emails from certain accounts.
If it's that important take responsibility - have you actually thought about picking up the phone and talking to the organisation/RFD/FLO?