Food expired before the date listed

I bought a whole lot (20) of Woolworths food BLUE ROCK FULL FAT BLUE MOULD CHEESE 20g that was on special at I think 4 for 20 rands. The expiry date on the pack says sell by 21 Feb use by 23 feb ... i ate maybe 6 of them so far(they have all been in my fridge for a week now since i bought them) ... today i wanted to make a salad using the rest and opened them one by one to find the MOULD part of the label was probably the only correct thing listed THEY WERE FRIGGING GROWING in their packaging ... I did not expect this from woolies where i buy all my fresh produce from solely because it usually outlast the use by date by far compared to other retailers ... I hate wasting food and having to throw 13 or 14 of these things out was NOT my idea of fun such a waste of what little money i can spare for food every month ... I had to go out now and buy at a huge expense more to complete my salad for my guests coming for dinner tonight ...<br> <br> I AM NOT A HAPPY CAMPER WOOLWORTHS!!! I mean if it was on the use by date fine but 10 days before come on <br> <br> How are you going to make me a happy customer woolworths so that i decide to come back again cos at this moment i am looking for a new supplier