Days after accusing his estranged wife and ShopClues Co-founder Radhika Aggarwal of an extramarital affair and downplaying his role in the e-commerce startup, Co-founder Sandeep Aggarwal has filed a defamation case against the former. Sandeep Aggarwal has also sued Co-founder Sanjay Sethi for the same. Sandeep Aggarwal also apologised for his Facebook rant against wife.