Such amounted of money on me and i cant afford. We have negotiated a price so i can get where im going. I just want to say there is room for improvement in this system. I dont know how strong your relationship is with the cab companies. There is definitely always room for improvement. A couple of things, one is that all tax easy in San Francisco are required to take the debit card. If they dont, there is a problem. All drivers are supposed to have backup slips if this system is not working. Sometimes its a cellular network. It does happen. If it happens, where the driver actually swipes the card and says the system is not working, sometimes if they move the vehicle slightly, it will pick up the signal. There should be a back up system. She should take the card in a backup system. If that does not happen, then i would suggest you call that into 311 or to the parra transit office. I think 311 is the easiest for people to remember. Accessible services is partners with the Taxi Division wi