Lost/****** bag. Refunded peanuts and need help

My 17 year old sister flew with them. Her bag was lost. It was never found. She had many new, branded items which she had never worn in the bag. She also had irreplaceable items such as a hoodie she received in Birmingham, England when she played the viola in an orchestra there. And items my mom and grandmother had bought for her. Our grandma died in April 2021. Our mom dies in August 2021.

We called everyday to try get the bag back because we wanted her items back. Not a refund for the lost items. We even sent pictures of a similar looking bag as the lost bag was part of a set.

We were given a form to complete and list the lost items. We were told they would repay us for the items lost. They have now paid only 1/4 of the amount. The money they have given us would not even cover the cost of the bag, the sneakers which were lost/****** and a few items.

We don't know where to get assistance and are going to approach the National Consumer Commission to see if they can help. Does anyone know where or how we can get help. We have been fighting with Flysafair since March 2022.