Financially stressed telecom operator Vodafone Idea, in a letter to the Department of Telecommunications (DoT), has sought the adjustment of goods and services tax (GST) refund to the tune of Rs 8,000 crore against its dues linked to adjusted gross revenue (AGR), an official told Business Standard on Wednesday. Even as the letter listed a number of demands, including a moratorium of three years and a 15-year staggered payment of the AGR-linked dues besides asking the government to set off its GST credit, the company’s chief executive officer, Ravinder Takkar, called on DoT Secretary Anshu Prakash again — making it