Watch out for mouldy oreos

I purchased oreo biscuits when i opened the pack the biscuit had like a greyish layer/film over it, after opening the whole pack all the biscuits was like that like when mould starts. I called the customer number on the pack gave the person my details and sent him the pics of the product and packaging i was told he would forward it to the call centre. The next day i received a R30 voucher off my next mondelez purchase. Not a call not an email to explain why their product looked like that or what was wrong with it. Utterley disgusting customer service why would they think i would want to purchase any of their products again! What if i had given the biscuits to my daughter without opening the packet first and she had just eaten what ever was wring with this biscuits.....you just lost a customer!