With reference to the complaint for water theft at Polkadraai that was opened by W D F Rocher at the Swartruggens Police Station in the North West on 8 April 2014, case number 31/01/2014, in respect of which no investigation has taken place and no arrest have been made, what are the (a) details of all information pertaining to the case and (b) reasons why no arrests have been made?