UGVCL — billing charges

Address:

Ahmedabad, Ahmedabad, Ahmedabad, Gujarat, 382424

My customer id is [protected].in last month i had paid 931. It was a full payment. Now today when i check the new bill then it shows 16.15 rupees was less paid. So i got a bill of 947.83 rupees. Another thing is from this current bill and in the last two bills it charged more amount. Mostly our bill amount should be between 600 to 650. Please solve it asap