Missing items from my luggage

I flew with Southwest Airlines last week. It was a direct flight and when I arrived to my destination I discovered that several items were missing from my bag.

My luggage was not damaged so I didn't even think to check the content before I arrived at my hotel.

The missing items were clothing and a bottle of perfume which was hidden inside the bag. I remember packing the items because several of them were gifts and I wrapped them.

I contacted the Southwest Airlines but they could not help me because "it was more than 4 hours since I arrived and my luggage didn't show any damage".

Next time I fly I am sealing my bag.