Delhi Chief Minister Arvind Kejriwal on Friday accused Prime Minister Narendra Modi of betraying the people by failing to deliver what he promised on retrieving "black money"."Modi has betrayed the nation. He has promised a lot of things before elections but has not delivered a single one of them," Kejriwal said, during a function at Constitution Club of India in New Delhi.Pointing to Modi's promise of "bringing back black money, each citizen can get Rs. 15-20 lakhs", Kejriwal said, "Modi government has failed to fulfil all the promises made so far. Nothing has been done regarding that."