Terrible and disgusting service

I was overweight so gave them my laptop bag with no computer in it however I left my diabetic insulin on the side to the value of R2800. I called the BA office in the UK Newcastle and spoke to Alexia on the 5th of May and lodged all my complaints with them. There was no wheelchair assistance at my destination Jhb and on had a stale diabetic sandwich on flight. This is disgusting service due to the fact that I am visually impaired and require all this services because I would get hurt without it. To date I have still not received any response or feedback. Seems like massive and well established companies do not bother to follow up with these issues.