Shell

I was using Pump 4, tab on the "regular", after I finish pumping my gas, I received my receipt. I noticed that I was charged incorrectly. so I looked at my receipt and I was charged for "premium" price. I went into the station to talk the cashier. he said that was not his probably. I told him, that, he need to check the pump. he repeated himself. I just left. I have never put "Premium" gas in my life. (I am not able to upload receipt) my receipt information:
[protected]
08/18/19 [protected] 06:19:18 pm
16.01 price $2.75 -= $44.19
thank you Sonia Barron [protected]