Punjab State Power Corporation [PSPCL] — Wrong amount of bill

Address: 145001

Website: Www.pspcl

Contract no.[protected]. Last bill paid on 04/09/2016 of Rs.2070/- for period of 29/8/16 to 19/11/16 through internet payment.My average bill always was around Rs.1500/- with 150-60 KWH consumption always.But message on my number shows Rs.6710/- although metre reading shows only 145KWH consumption for given period. Please rectify the mistake in billing immediately so that I can pay legible amount by due date..