Non-existant communication

Dear RCS, I have tried phoning due to sms's and emails received from yourselves but I can never get to speak to anybody. I have sent emails requesting somebody contact me but my emails don't get answered, no one phones me back. Please don't tell me it's due to Covid as the same lack of communication existed BEFORE Covid. Trying to sort out a problem with RCS is like finding a diamond in my back yard. The email address I have sent emails to are: *** and I have now sent to *** as well. I have had the same problem in the past with trying to sort out problems, the very same department that sends me emails DOES NOT BOTHER to respond to my emails. I want communication between myself & RCS to be in writing, any arrangement I make with RCS is to be in writing and not telephonically. But I still want someone to phone me so that I can get the correct email address to send future communication to.