Items not priced, overcharging and overall bad service

I went to Builders Warehouse Somerset West on Saturday the 5th of March 2022 to potentially buy a few items. I noticed that most of the items (10/15) that I was interested in did not have prices. I asked for the manager to find out why. I was directed to a person that informed me that their machine to print prices has been broken for more than a week. I pointed out that it is a requirement by law to have prices displayed. Hand written prices was not an option he said because it is not their 'standard'. We therefore said that they would rather break the law! He also refused to give me his name (found later out he is Graham Aploon). I later spoke to his manager, Mr. Stefan Louw who confirmed that they can't mark prices and that it is company policy to give their names to clients (also to wear a badge). Eventually I took 2 products that was priced on the shelves and guess what - I was overcharged at the till by 34.3% (R120) on an expensive hammer and 9 % on a hosepipe nozzle! Eventually a was refunded the difference. The short and the long: The majority of items are not priced and when I took 2 that was priced, both of them was overcharged by almost R150! Bad service!