Arrogant, disgraceful customer service

After successfully checking in on-line and arriving at OR Tambo Airport to catch flight BA 6202 to Durban I noticed that the flight in question didn't appear on the information board. After inquiring I was told by the Slow Lounge receptionist that the flight had been cancelled. I had received no notification and neither had the travel agency through which the ticket had been booked. I was flying on business and had a crucial meeting to attend at 9am in Durban, which is why I had booked a 7am flight. The airline offer no professional customer service personnel at OR Tambo, despite this being the major place through which their paying customers pass through. Instead I had to interact with rude inept booking clerks, who it was very clear could care less about my predicament. I got a message through my travel agency that BA took full responsibility. Yet, I have received no recompense, no telephone call, e-mail, fax or text message. BA's arrogance with regard to my issue is astonishingly bad and disgraceful.