Sour milk

On Saturday 12th of March we bought 3 liters of PnP milk. I don't usually check the expiry date on the milk, but on Monday after I opened the second sachet of sour milk, I saw that the expire date of the milk was the 29th of February. Really!!! Milk that's already two weeks past the expire date still on the shelve???? Won't be shopping at P&P Hyper Northgate again!