Pick n Pay Little Falls Poor service/Bad attitude

I shop frequently at Pick n Pay Little Falls, Hendrick Potgieter Roodepoort and on Monday when i did my months grocery shopping i was completely disgusted & annoyed with the service. About 50% of the items i had purchased were priced incorrectly, i had checked my till slip & noticed a lot of items doubled the price as aposed to the shelf markings. I immediately asked to apeak to a manager & confronted him with my discrepancies but was told, "the new machine that prints the prices is broken & that most of the prices on the shelves are incorrect anyway"! What utter nonsense & it is not the customers problem, its PnP to make sure the prices are correctly marked. I find this totally unacceptable & poor service!