gas pumped

I've used the service before, but last week my mother (82) went to get some gas and she pulled into the full service, not realizing the extra charge. The guy filled her tank, checked under the hood and cleaned her windshield. Guess what? 15 gal. and $74.70 later!!! I was shocked! They charge $4.929 per gallon to do something that she could have done herself - pumped her own gas and washed her own windshield. No other service. No fluids added nor air in the tires. The gas was only $3.68 a gallon. $1.24+ extra per gallon?! REALLY? I will NEVER use that Chevron again. It's always the highest priced in Tucker anyway and I've avoided it for gas purchases.