Air Namibia is one of the worst airlines.
1. They lock the two rear toilets for the 10 hour flight duration Frankfurt to Windhoek, for exclusive use of the cabin attendants. This means that the 300 or so economy class passengers can only use the 4 centre toilets.
2. When they serve breakfast, the meal is served first, and only when all passengers have received their meal are the drinks served - often half an hour after the meal is served.
3. The cabin staff NEVER answer a "Call Attendant" light, except to cancel the request!