BENGALURU - Leading e-retailer Flipkart on Monday announced a 'big billion sale' offer from October 13 to 17, a year after a similar sale enraged buyers for 'cheating' on discounts and its portal crashed. "As an app-only shopping event, our 'big billion days' have exciting offers and discounts across 70 product categories for customers," Flipkart said in a statement here. Unlike last year when the sale was for a day (October 6)...