None of that info is private and uhaul does not care who they give that info to. If you ask they give it. They won’t ask for id when you walk into a uhaul center when you request info on your past rentals.
Discussion
It is private, that's why U-haul has to have a privacy notice telling you who they do and don't share the information with, and when they will and won't share it.
Sharing someone else's personal information with a random person without a subpoena or other court order would be a direct and deliberate violation of U-hauls own privacy policy, opening them up to civil liability.
U-haul is in fact already being sued for failing to adequately protect the private personal information of its customers.
Your name, address & phone number (unless it’s unlisted) are all public information. Uhauls privacy policy is about who they sell your information to for profit. And trust me uhaul gets sued for lots of silly reasons.
Take what I’ve said as a warning for fucks sake.
I said it so maybe you don’t get info exposed showing that these guys are all feds. Lmfao