Question

Billing

I got a Billing notice and i was supposed to pay when i received my refund but i haven't gotten it yet why would u charge me still.

Employee

Sounds like the IRS is taking too long to send your refund or reduced it. See What if the IRS reduces your refund or delays it.
https://ttlc.intuit.com/community/payments/help/what-if-my-federal-refund-isn-t-enough-to-cover-my-turbotax-fees/00/26313

Then when the IRS does send your refund they won't take the fees out again.

And, Why you got charged,
https://ttlc.intuit.com/community/charges-and-fees/help/why-was-my-bank-account-auto-debited-for-turbotax-fees/00/26102

You should have received about 4 emails asking for the fees. If you don't pay they will debit your account. You had to agree to it.