bad customer service by staff and manager

sunday morning i went to pnp steenberg village .when i got to the teller i noticed that the chicken i took had a funny colour.i checked the sell by date was 12/03/2016.i went to the ilse and showed the packer and asked him how can they have expire goods on there shelves he said oh ok this is the last one not even an apology .i then took ather chicken and went home. when i opened the chicken i bought (sell by 15/03/2016) i almost vommited because of the smell .my husband then took it back and showed the manager and he rep**** by saying that these things happen again no apology or what so ever and after driving up and down . i would expect that kind of service from checkers or shoprite not a big retailer like pic n pay.after getting home with the chicken that was given to my husband , i opened it and had the axect same smell like the previous chicken and the sell by date was also 15/03/2016. working in retail ourselfs this kind of servise is unexeptable .