I can't get a US person to help, only someone with broken English saying my account has an issue they won't explain.

I own a marketing agency with 250 people and want to spend $500k a month lol.

My best guess is that have two X accounts, one personal and one business. Both are premium but maybe that throws a flag?

In that case, I'd try to find an account manager at X and contact them directly via email or LinkedIn. They might be able to sort it out.

I also have two accounts btw. Didn't raise any flags. But their ad platform is buggy, so it might just be a coincidence.