Your mother purchased a washing machine for Rs.10,000 from an authorised dealer of the manufacturer with an oral guarantee that the machine will be replaced with a new one if any of its parts becomes defective within 3 months from the date of purchase. The motor of the machine was burnt within 15 days of its purchase. On complaining, the seller refused to replace the machine. Name the redressal agency under Consumer Protection Act where your mother can file the complaint.