Nail in prepacked food

Platinum Park Polokwane SPAR, bought mac & cheese and mince yesterday (pre-packed) got home and starting having dinner, about halve way through i bit into something harder than macaroni, once retrieved from my mouth a saw to my horror a nail about the length of 1.5cm long. long story short whatever i ate is not in my stomach anymore. Took the nail and food back to SPAR, the head of department calls me back and says none of their employees have nails and it couldn't have been them. Thank you SPAR for your dishonesty now you've lost a customer and i hope with this review you lose even more. PS: i have the photos and will be sharing and sending them far and wide.