4% sad refund

OUR COMPANY HAD CLAIMED FOR 4%SAD FROM CUSTOMS 

1)WE HAD GOT A DEFICENCY MEMO THAT

WE HAVE NOT MENTIONED THE QUANTITY THAT IS IN BILL OF ENTRY 

BUT THE SAME ITEM WE HAD  SOLD OUT ON CARTOON BASIS

EXAMPLE :: 

WE HAVE IMPORTED 10 CARTOONS OF PLATES CONTAINNING 

ONE CARTOON =  50DZONES = 1*50*12= 600PCS

10 CARTONS  = 6000PCS

IN INVOICE WE HAVE SHOWN 10 CARTOONS SOLD

BUT WE HAVE NOT WRITTEN QUANTITY I.E PIECES  IN SALES INVOICE

2) WE HAVE ALSO WRITTEN CLEARICAL MISTAKES IN INVOICE 

EXAMPLE

IN BILL OF ENTRY IT IS WRITTEN AS PLASTIC PLATES BUT WE HAVE WRITTEN HAS PLATES IN SALES INVOICE

IS IT POSSIBLE TO REJECT THE REFUND OR NOT 

PLEASE LET ME KNOW ITS VERY VERY URGENT