West Bengal State Electricity Distribution Company [WBSEDCL] — Showing Outstanding amount of 64.43 in spite of paying bill timely

Our connection is with Baruipur Elec supply Numbered[protected]. We pay bill through net banking. But in April 2015, the net banking procedure is at fault at your end. Thus we were forced to pay at your counter, copy of which is attached with highlight. This month, while paying bill I found that an amount of 64.43 has been included as Outstanding. The amount is not much, but why should we pay more.