Sour Milk

I have bought 2 litres of low fat milk 3 times in the past week. On all three occasions the milk was sour 2 days before the 'best before' date. Today, the 14th, the milk which is best before the 19th is already sour. I am tired of this now. After a long hard day at work, once the house is all locked up for the night, I do not have the energy to return these bottles of milk.<br> <br> Sour milk is due to the poor cold chain that Pick n Pay has. They need to learn to keep the milk ice cold at all times.<br> <br> For me to go back to the shop every time makes me the looser. Who pays for my petrol and my time when I have to return these items? I'm at the end of my tether with Pick n Pay. It looks like I should take my business to Woolies - I've never experienced sour milk from them.