Do the Co-operative Court have power to decide about forgery or not

I disputed a resolution, at Co-operative Court, fabricated by Society allegedly signed by 9 members, wherein my signature is forged. Other 8 members neither come to court to give evidence nor Court summon them. Court held since other 8 members do not deny about their signature, therefore WHOLE document cannot be said to be forged & fabricated. (a) IS THIS FINDING OF COURT IS TRUE? (b) The settled principle "Fraud vitiates everything" cannot be applied? (c) Do the Co-operative Court have power to decide about forgery or not?