The 1st Appellant M/s Tuffware Industries is a partnership firm of which Appellants Nos. 2 to 5 are the partners. The firm is engaged in the manufacturing and export of stainless steel and ancillary products. The Appellants were allegedly banking with the 1st Respondent Bank since 1995. There were regular in repayment of the debts availed by them and ever no dispute till 2008. Following the global recession of 2008, the business of the Appellants got severely affected and in consequence, the repayment of the debt got delayed. It was noticed that the Respondent Bank was charging more interest in violation of the RBI guidelines. The total credit facility enjoyed by the firm was only about ₹8,25,00,000/-in 2010. However, due to the enhanced rate of interest as well as capitalisation, the debt doubled in a span of 4 years to ₹16,35,00,000/-. The account was classified as a nonperforming asset (NPA) and on 28/10/2016, the Respondent bank issued a demand notice under section 13 (2) of the SARFAESI Act demanding payment of the outstanding dues of ₹18,26,62,583.27. The Appellants would state that the impugned demand notice is illegal and suffers from various infirmities. It is contended that the demand notice was issued only to the 1st Appellant firm. The rest of the Appellants were not issued specific demand notices. Marking of copies to the rest of the Appellants would not be sufficient. The Respondent Bank also failed to provide the option of redemption contemplated under section 13(8) of the SARFAESI Act. The breakup of the interest applied and the penal interest charged is not detailed in the demand notice in contravention of section 13 (3) of the SARFAESI Act. The