Mouldy Biltong

I bought PnP brand moist biltong at killarney Pick 'n Pay branch, at first i noticed a funny smell, but continued eating thinking it must be in my mind, only to come across a piece which had mold on it!! luckily i took a picture of this because i left the packet on my desk and the cleaning lady threw it away, i was very disappointed by this because i always buy this biltong and have never had issues, but now.....don't trust it.