Dollar General

I went into the store and bought only food stamps items and then I went in line to pay for it with the food stamp card and I slid the card he rung everything up he says the total the food stamps took was 26.00 and then looks at me and replys amount due 3.22 I then asked what it was that came up not being foos stamps I then ask him could he possibly tell me what it could have been and he then looked iin the bags to see everything and so did I he kept telling me the amount total then he stated everything was food and he said I cant explain to you why it say that total then he made remarks saying to pay that or I can get out his store and he basically banned me from the store cause I asked him to show me exaclty what it could possibly be. We go to that store every day.