Old and mouldy products

I always order on the checkers sixty60 app and they have on two occasions brought me expired or old molded products. When you go into store to return and complain they brush it off lightly likes its no big deal. If its not pork that they sell that's expired then it their deli or bakery or veggie products that's off or goes off soon the following day. I don't think the people doing the shopping or customers at home do it with pride, they just grab any product off the shelve without checking it. My latest complaint is the bakery lamingtons that i always buy in store and on the app. I bought two packs on sixty app two weeks ago and what i got was old, some of it was hard and the cream was stiif and hard on one of the packs, yesterday i bought again and again one of the packs was the cakes are old and some are mouldy as it has that white spiderweb looking miffness on it. My teenage son ate one yesterday and didn't know it was old, he had a runny tummy whole late afternoon because of it. Im very disappointed in the poor quality foods and disregard to customers health that this shop is showing.