I bought a block of mozzarella from a local deli around March 6 or 7. The "best before" date was in early April. Yesterday I was rummaging through the fridge and I noticed that the cheese is totally moldy! It is unopened and has been in the fridge the whole time (and there doesn't seem to be a temperature problem with my fridge).
My question is, can I return this cheese to the store? It is still two weeks to the best before date and it is uneatable. I've never tried to return something like this so I'm not sure if it's acceptable or not.
Any advice appreciated!