expired Stock sold to customers

Today i, my wife and two kids (2yrs and 4yrs) went to pavillion to clothing for the kids, because we were going out at night we decided to but our kids fried chips from checkers in pavillion as a snack and we also bought a 1.5L pomagranite juice from the fridge , we did find the taste funny but we thoight maybe its because its our first time trying the Sir juice range but upon reading the ingredients trying to figue out which fruits are also included in this blend we picked up it had a best before date dating the 11/12/2017 (disgusting) we all had consumed 2 days expired juice, because the checkers in st Johns is closest to us and it is the best so far in everything, i requested to speak to the branch manager show him the container of the juice and the slip (proof of purchase) informed him of the situation which he wanted to resolve but i said No, i asked i can be put through to pavalion so i can communicate with that stores branch manager but we could not get hold of him instead Vernon Samson (Perishables Manager) got the call, i informed him of the same situation but i could deduct from his responses that we are not at the same and he does not understand the seriousness of selling expired stock, i am very disapointed by this further more no wonder the juice was bloted, i has given my kids allegex and i and my wife will also be taking it, i really hope we do not get food poisining as there will be hell to pay.