Bad and old food from Checkers

Bought a six pack of Long-Life Milk from Checkers. I opened the first box and a virtually clear liquid came out. I then noticed the box was blown from the inside. I then looked again at the box and found a date 5th of March 2021 stamped on it. Does it really take 7 weeks to get to the store? I went to another Checkers to see the same milk; there the first date was 21st December 2020. 4 Months?? I do understand that the Milk is long life but it is still a semi perishable product