Consumer Redressal

I have received my Electricity Bill for the month of June along with previous arrears for a total sum of Rs.14,300/-. My Average montly bills used to be around Rs.1500/- to Rs.2000/-. I had received a bill of the following amounts for the last three months:- March 2020 - Rs.1700/- April 2020 - Rs.1470/- May 2020 - Rs.1540/- These were the amounts which I have already paid.  And these were the charges I usually used to pay the past months and past years.   Over the last three months I have not added any new Electrical equipments.   Neither has my Electricity consumption increased.  I had gone to the customer care centre of Adani at Bhayendar and nothing is done about it. Kindly help me resolve the issue.