I nearly die due to expired stock

i went to spar tops yesterday and bought a 6 pack of flying fish i was informed that they had a special if you buy one 6pack you get the second free i then took advantage of the deal and proceeded to get my second 6pack free. i got home had 3 440ml can and went to sleep this morning my tummy is bad and the cramps are unbearable i then go to check the expiry date and its November 2014 i was shocked that i had 3 cans of expired stock its really unacceptable and now im paying the price for their stock dates. i drink flying fish often so i am very suprised by this particular tops as its the first time im purchasing flying fish from them and Marina spar tops where i usually purchase flying fish didnt have this \SPECIAL"yesterday"""