9. Your extra luggage could cost you a buck
Junk don’t fit in the trunk? Your driver can charge you one whole dollar for each bag that doesn’t fit in the backseat or in the trunk with the lid shut.
10. Your driver must accept your credit card
Okay, first: it has to be a major card, like Visa, AmEx, MasterCard, or Discover. Second: if the driver says the credit card machine is broken, then ask him to take your card number manually, as all drivers are supposed to have a manual credit card imprinter in the cab just for that purpose. If he says he doesn’t have that, then insist on calling dispatch. Basically: you have to pay, but you don’t have to do it with cash under any circumstances. And if a driver does try to pull the "my machine is broken" lie, report him so that, as our trusty dispatcher said, "we can fix the machine or we can fix him."
11. If you have a problem, there's not much you can do about it...
... at least not in the moment. Save for calling dispatch or calling the police, most of the time you just need to pay your fare and get outta there. BUT, don't do so without recording the name of the cab company, the cab number, the driver's name, and the date and time of the cab ride. You can either report your issue directly to the cab company and let them handle it, or you can call "311" or 415.701.2311 and let the city deal with it. The good news is that cab companies and the city take all complaints super seriously.
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Daisy Barringer is Thrilist's SF Editor and one time a cab driver drove off while she had one foot on the ground and one foot in the cab. He didn't stop for an entire block. Sadly, she'd already tipped him 25%. Follow her for more fun stories like this on Twitter @daisy.