Baggage destroyed

I am writing to formally lodge a complaint regarding severe damage to my checked baggage on my sisters recent FlySafair flight from East London to Cape Town. Upon collecting her luggage at Cape Town International Airport, I discovered that her bag had been completely ruptured. The damage is extensive and renders the bag unusable, it can no longer safely carry clothes or any personal items. This level of damage is unacceptable and clearly occurred while the baggage was in FlySafair’s care. I am utterly disappointed, as we entrusted her belongings to your airline with the expectation that they would be handled with reasonable care. Instead, she has been left with a destroyed suitcase and significant inconvenience.