Is there a provision to get a refund on the value of Stamp papers that are not used or spoiled?

Yes, there is provision. Application may be submitted within the time limit mentioned below to the District Registrar (Deputy Commissioner of Stamps), Assistant Commissioner (Revenue Division) or Assistant Commissioner of Stamps: If Stamp paper is purchased and executed as security to get loan and such loan could not be obtained on execution of such document within 6 months from the date of execution (signature); When the stamp paper is not used for the purpose for which it was purchased, within one year from the date of such purchase; When time limit prescribed above is over, application may be submitted to Government within 10 years from the date of purchase of stamps; There is provision to get refund beyond 10 years from the date of purchase of stamps.