When you sign up, you get a designer, an account manager, and a QA.
When you send a design request or a question, the 3 of them receive it and discuss it as a team.
The whole communication flows through the account manager, so your designer can dedicate 100% of their time to being creative.
That's also handy so that whenever your designer is taking a day off, your account manager can get you a backup designer without interrupting the flow.