Does anyone have an email or contact for real customer support?

Over Christmas, I had a fraud bill from a pizza place ($800 over five charges)

Disputed it, won the dispute with my credit card.

Discussed it with the chat bot on Uber, said everything is fine, they'd take it off.

They took one of the many fraud charges off, but won't let me me make another Uber reservation or ride until I pay the remaining fraud charge (!)

Tried escalating it to no avail. This has been going on six months.

Any way to speak to a competent human there?