Property Financial Forgery

forgery on Hi Im looking for an advice The problem is i have given the document for loan purpose to a mediator the financier holded the document for the old debth of the mediator and mediator forged our signature in 100rs document and given to financier for his depth after struggling a lot we found the financier and asked for the document the financier denied but the financier confess that the document holded for the debth of mefiator and also agree that he didnt given any penny on the document we have that recorded so pls guide me