I am very disappointed with the service British ai...

I am very disappointed with the service British airways provides. Its been 4 days after my flight and my luggage has still not arrived. I have had to buy new clothes in my destination country. My fathers health has been put at risk because my luggage contained his diabetes medication. The worst part of it all is the indifference on the part of the British Airways reps at the airport in trying to locate my bag. Definitely not flying with British Airways again!