At pickup doesn't honor phone promise to check out car 10 minutes early instead of 15 minutes late: "I don't know who you talked to on the phone" (20 minutes ago in your office). Offers a free...
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It's OK to charge a fee for parking ticket processing, but not OK to communicate that in (much) less than 12-point font, nor OK to use pop-ups on the site where the fee is paid.