well, is the DNS setup correctly? Maybe you use the DNS of the hosting company instead of your own. Maybe the other way around.
Also where did you create your ticket? (Link)
Please send me a link to one of your sites in a PM, or share it here on the forum that way i might be able to see what is going on.
Also DirectAdmin is not responsabele for how your DNS is setup, even when you use their software, the same like your ISP is not responsabele for you not having internet because your ethernet cable got destroyed by the cat.
This forum is made so we as user can help each other, but when the problem is at the Hosting company we cant do anything (except advice you on how and what)