Net weight on food ****

I have been buying salmon now for 3 week for my diet. On the vacuumed package it show they weight is 245g, but if you take it out of the package and weigh it, it only comes to 207g. So firstly woolies are overcharging their customer's and steel8ng from their customers. Very very very unhappy about that. And you pay so much for the product andbthen being ******.