By default, I'd rather get fuel from any station but Mobil. This station helps me stick to that conviction. The attendants are usually nice but when they are overly nice, you might be conned. So, was getting served by the overly nice attendant and all of a sudden the pump stops, meter starts blinking. The attendants say it is power change. I quickly checked other pumpsthey are dispensing, the 'power change' didn't affect them. I knew I was to be conned so I demanded he starts from zero, he resists till I called for their manager. He obliged me and I left. Never to return even during scarcities.
Cash payments only as far as I know.