Delhi Jal Board — duplication of billing cycle

Address:

New Delhi, Delhi

MY K NO IS [protected] ( NAME : MAHESH MATHUR / ADDRESS : 765 POCKET E MAYUR VIHAR PHASE 2 NEW DELHI)... I had received a bill no[protected] dated 28-Jan 2015 from DJB of Rs. 2922/- only for billing period 3 Nov 2014 to date 27 Jan 2015. This bill was paid by me vide cheque no 620951 drawn on AXIS Bank Sec 16 Noida . The cheque of Rs 2922/- was debited to my account on 14 feb 2015. I have now received another bill no[protected] dated 21-Mar 2015 from DJB of Rs. 4427/- only for billing period 25 Aug 2014 to date 21 Mar 2015. Since i have already paid all bills till period 27 jan 2015. Kindly correct my present bill no[protected] dated 21-Mar 2015. regards