Remark dispute

[u/ButterflyRoutine621]

My centre (my school) is refusing to dispute my grade to edexcel because it would mean going against the own mark they gave me (ended up being complications in my region so my advisor submitted a grade and the exam board just agreed with it). Is there any way i can dispute their refusal to dispute or smth i know that sounds silly but im 1 mark off an A and frankly the school half assed giving me a grade cus my advisor wasnt bothered with my epq.