Builder not giving service tax and vat demand letter

Unknown (Sr) (47 Points)

18 August 2013  
My builder asking Service tax and vat after 2 yrs from the date of agreement, He is not issuing demand letter for the same but my bank is required demand letter for the same. Builder is also asking to pay Interest on st and vat after 2 yrs. pls guide me how to tackel with builder..