Selected Intern's Day-to-day Responsibilities Include Forensic Audit of Listed Companies Studying Annual Report, Balance Sheet Finding Companies to Invest About Company: DRB Advisory started operations in 2016 and has offices in Kolkata and Delhi. We specialize in debt and equity financing, M&A, virtual CFO services, rating services, housing loans, and LAP. Our tie-up is with a 48-year-old CA firm in Kolkata. They specialize in accounting, audit, and taxation-related matters.