Have I been over charged?

[Spockrates]

I'm giving this guy the benefit of the doubt and thinking maybe I don't understand what I'm looking at, as I didn't get the best education, this garage was the only thing open I'm nearly 5 months pregnant and was craving pasta I didn't have any pasta at home just left over Christmas Dinner in the fridge which i didn't want, so I went up to get my pasta and picked up a few other bits, I told him to take off the pork pies and the seafood sticks as i didnt have enough, but it seems like he scanned the pork pies twice and only took one off as they are 2 on the receipt and only one says void, I pointed out to him and he insisted he did and I became embarrassed and didn't want to take it any further but when I got home I calculated on my phone and it only came to £12.6 but he charged me £16.20 I know its not much and I don't care about the money it's the principal with the cost of living going up (if he has indeed overcharged me) can someone look at this receipt and tell me because maybe I'm just stupid and he has charged me the correct amount after all as I don't trust myself to really understand what I'm looking at with all those numbers it makes my brain run blank

If you came home with one pack of mini pork pies - the amount is correct, you have been charged the right amount.

If you didn’t have one pack of pies, he has overcharged you.

@SenoritaNaturista no I didn't get any pork pies at all I asked him to take them off but he must've scanned them twice I pointed it out how come there was 2 on the receipt but he said no he took it off and I was too embarrassed to take it further as I'm non confrontational I was thinking sometimes was weird because initially with the pork pies the price was £17 something but when I asked to take the pork pies and fish sticks off the price only went down to £16.20 but he was very adamant that it was the correct price