CBSE — not got approtiate mark

Address:

Moradabad, Uttar Pradesh

respected sir\mam i am the student of class 10 sir\mam at last 28\05\2015 when i got my mark sheet then i completely shocked to see my marks sir\mam i am study at mary english school which is situated with s.k.m sr sc school haldwani sir\mam i am Shivam Verma and my roll no. is 5320721 and date of birth is 01/01/2000 sir \mam i am not completely satisfied with it because i work hard in my exam and when i see my fa copy then i got a1 grade in 4 subject but when i see my marksheet then there is b1 grade in it sir/mam at my school there have no choice of board and home board sir/mam i am not agree whith it sir /mam i have lost my father and there have also a mistake in my father name my father name is \Rajan Kumar Verma si/mam in asl i got c1 weather i perform well in it sir/mam there have no any practical was held so why they give me b/c grade in it sir there have no any hindi, bio subject teacher so plz plz sir /mam take any action on it i waite for your answer