Former Delhi chief minister Arvind Kejriwal Friday criticised the Delhi budget and said the BJP has taken a "u-turn" on almost all the election promises."BJP (had) promised 30 percent reduction in tariff. It didn't do it. Why this u-turn? BJP has made a u-turn on almost all poll promises," Kejriwal said in a tweet.The Aam Aadmi Party chief said the state budget does not have any measures to bring down rising prices."No mention in Delhi budget on how people will get relief from the rising prices of vegetables...no mention of how electricity supply in Delhi would be improved...no mention of how water starved areas would get water," he said.He also alleged that the Bharatiya Janata Party (BJP) does not understand the problems of the residents of the national capital.