Cambridge IGCSE Exam clash

Found out that Cambridge scheduled igcse history on the exact same time as gcse biology on the same date even though it’s an exam everyone in the country takes. Now I have to take biology in the afternoon and I have a third exam that day so I’ve gotta do that after school or on a Saturday which sucks because of the whole procedures that take place when you can’t take an exam at the scheduled time. Cambridge international don’t even let you do the exam later which is so entitled, you have to do it at the exact time it’s scheduled and change all your other exams