AVVNL — exceeding bill I'm complaining about.

I have domestic electric connection on the name of om prakash gora. My k. Number is[protected]. I have recieved electric bill of june - july 2018 on 10/08/2018. I got bill of 5488.00 inr. Which is extremely high on the behalf of average bill. All the equipments and electric item as used as before throught out the year. Then why this bill goes so much high.in bill it shows that unit reading is taken on 25/7/2018. And it was 12635. And on 10/08/2018 the unit reading was 12639. Please consider that in 16 days we used only 4 unit with all electric equipments? Please contemplation my request and resolve my problem as soon as possible. I have attached my bill photo.
Thanking you