contant nside not matching details on the outside

I bought a 4+4 chicken drumsticks & thighs 1.5 pack,however only to find 3 thighs and some other type of chicken meat that i don't understand. The colour of 1 piece looked greenish in colour, tried to check the expiry date which ut was not visible enough. I do understand that this incident might be beyond Pick N Pays control, however the must be someone responsible for this. I'm reporting this as i bought it at Pick N Pay.