Terrible customer service

I had an absolutely ATROCIOUS experience on your flight SA535 to Durban this morning!!! When boarding the plane, I was approached by one of your ground staff and requested to check in my carry-on luggage (even though it was within your carry-on restrictions). After 5 minutes of trying to explain to her that I had valuables in the luggage and it was not secure, I decided to give in to her request, as she was no longer even listening and just being very rude. Her reason for wanting me to check the bag in was that the \flight was fully booked\" and there would be no space to stow my bag. Once the pilot announced that the doors were closing it was quite clear that the flight was not fully booked as the young man next to me was laying across the three seats on his side of the aisle and I could see three overhead compartments that were COMPLETELY empty! On landing, I found that the baggage \"throwers\", through exemplary handling of my luggage, had torn a hole in a sports bag that I bought less than a month ago. After looking through my bag when I arrived home, I found that my bag had been ruffled through and someone had decided to relieve me of a bottle of expensive cologne!"