Simba chips

We bought a few packets of Simba chips at Pick n pay in strand. Yesterday I took a packet of Simba Mexican chilly out of the cupboard and noticed the packet was rather flat. My wife opened the packet and threw the chips in to a container. We immediately noticed the content was very little. My wife threw it back into its packet and we then weighed it on the kitchen scale. The weight was 89 grams instead of 120 grams. We took the other packets out and weighed all of them. The weight of the other packets was fine. I would suggest that consumers must be on the alert as we pay full price not to mention the high price for foods and not getting what we pay for. If you suspect the quantity is not right, weight it and report it. We should not tolerate this and allow the suppliers to get away. 30 grams not much? But multiply it with 1000, you get 30000 grams .