Mouldy cheese pick n pay

I am absolutely disgusted with the cheese I purchased from them, I did not look on the under part off it and when I came home to use it, it was mouldy, was purchased on the 6th and the best before date is the 28th. This is such an inconvenience as now I have to drive back to the mall, pay for parking etc when they could have just made sure their stock sold was not bad