On the main page you see at the bottom a list of people who are currently logged in.
Underneath that you see:
[Administrator] [avast! Evangelist] [avast! reseller] [avast! team] [avast! translator] [avast! Überevangelist] [Global Moderator]
In my opinion you can trust the response of all the people belonging in one of those groups.
Ofcourse we can not guarantee a that you will get a response (instantly).
Almost all of us are volunteers here and we do have our things to do in our personal life. (work, kids and things like that)
Don't worry if you don't understand a response.
Just say you don't and explain what you don't understand.
We will tell it in another way and we will keep trying to help you.
And as far for not being able to get everything you want... Most people want too much and/or things that are not possible. Be happy with what van get/have