"Great effort and care from nurses let down by..."

I attended QE hospital back in October and I was extremely happy with the standard of care given. The doctors, nurses and HCA's on the ward I stayed on were great. But since leaving I am extremely disappointed, I have now rang 7 times to ask for a note of hospital admission as proof of sickness to my university, hospital placement and employer. Each time I have rang I have been assured that I will receive a letter in the post. As I have not received this proof of sickness I have had to work a total of 42 hours in my weeks holiday between placement and work to make up for hours and money lost. As I juggle work and hospital placement 7 days a week; every week, I feel annoyed that I have had to make up for time in my one of two annual weeks holiday from university, simply because of lack of competence from particular members of admin staff.