Broken into my luggage and stole valuables worth R1200

I flew with Mango airlines today (Flight JE 701. 6:30. Lanseria to CPT). And when I collected my bag from the luggage carousel, I found that my (expensive) lock was cut off. As soon as I arrived home, I saw that valuables worth about R1200 were ****** out of my bag. I am very disgusted with Mango about this and I don't trust them with my luggage anymore!