Big Bazaar will launch a five-day Maha Bachat on Wednesday offering savings, discounts and bargain prizes across various product categories from food and grocery to apparel, footwear, toys, luggage, kitchenware, home decor, furniture and electronics, said Akshay Mehrotra, Chief Marketing Officer, Big Bazaar. Consumers using HDFC Bank debit and credit card will get additional benefits of five per cent instant cash back.