Exxon review: gas

Went here this morning to get gas in a can for the cars we sale. Pumped gas and nothing came out at all was on .16 cents went inside told them nothing was coming out no gas was pumping that I just wanted a refund because I knew they are ripping people off. I will never go back . She would not give me a refund for the .16 cents I told her I could prove it. I think this happens a lot with gas and we don't know. Please help check this for me Thank You