Peckham Park Road Off Licence

I stopped in this shop and brought a few items. As the cashier rang everything up I noticed there was no display for me to see how much he was charging me. I said to the cashier in a calm tone can you please tell your boss that there needs to be a a display so customers can see what your charging and could I have a full till receipt when he was done. I paid by card and He proceeded to give me the card machine receipt only after I paid. I asked again politely for a full receipt and when I checked the receipt. There was a charge for a soft drink which is usually 40% cheaper in other shops and I changed my mind and I would like the soft drink refunded but would keep the other items.
Well he didn't like that and went into this nasty tirade of abuse on how I didn't trust him and he can see the prices and how I should be satisfied with that and how this is not Tesco. Clearly his ego means more to him than his customers and he has something to hide. I asked him to refund The whole transaction and he hurled abuse at me and accused the whole time. Still In shock ! Avoid this shop they are ripping you off. Before he served me another customer challenged him on the prices.