Bad service? Try no service

I am so sickened with ICB. I was hospitalized when i had to write my final exam. Had an emergency operation with a recovery of 2 weeks minimum. i sent my sick note in and all they came back with is you need to pay again to write your exam. I have tried to get in contact with them sent emails, called to no avail. No further response from them other then the original email that was sent that i have to pay again. My question is WHY must I pay if I sent you a valid sick note and reason on why I could not right the exam. ICB does not care about their students they only care about the money. Not one response to my query or emails its been MONTHS.