1. The change history is empty
Tools > Change history in your own account. Weeks of silence means nobody is running it. This is the decisive one.
2. Nobody has ever asked for your margin
If they are setting ROAS targets without knowing your break-even, they are picking numbers.
3. Brand and non-brand are never separated
Either they do not know it matters, or the blended number is flattering them.
4. Problems arrive at month end
Anything under water should reach you the week it happens. Month-end is too late to act.
5. You cannot get a straight answer on who is in the account
Ask for the name and how many accounts that person runs this week. Vagueness is an answer.