Rotten Pick N Pay brands and price inflation at POS

Pick N Pay is no longer my main grocery store and it has been so for the past year. I complained about prices I get on the shelves after calculation and the price i get from their point of sale when i pay they don't correspond, prices are more than calculated and the staff in most of the Pick N Pay's would all blame the head office since they send prices systematically to their POS as if that was not enough i bought 2 pick N Pay brands yesterday mabele and oats to my surprise both product were spoiled even before best days dates it clearly shows they were not handled or stored correctly that was my last buy. I got no respond even after i emailed my query about prices