Quality assurance

I have been using Parmalat products for many years and my children love the yogurt. Today I was disappointed when my son noticed when he opened a newly purchased 1kg yogurt, that it was only 3/4 full. We weighed the product immediately and saw that the product states 1kg, although it only weighs in at just over 800gr. Now somehow I feel cheated (and for how long has this been happening?). Be truthful and transparent, and give a quality product as consumers just blindly pay for products (not necessarily weigh them every time, as we TRUST you), and it is not worth it. Don't then be amazed when you start losing customers.