Last week I pre-paid $50 has at Walmart, the pump stopped at $45.50. I stood in line to ask what was up. She informed me her little indicator in there showed I pumped $50. After I pitched a fit they decided to go to the pump and check it out. I did get me $50 worth of gas and I don't know what was wrong with pump. To top it off it was very crowded, my girlfriend was telling me to just leave and forget about it.