B. E. S. T. Undertaking — Previous month highly inflated bill amount not yet reduced even after paying.

Dear sir,
Consumer No[protected]
Had received a heavily Inflated bill for the Month of July 2020.
The amount was Rs 22990, which is 4 times more than the usual bill.
As per your estimated amount shown on your bestundertakimg website, i have made a payment of Rs 14126 which is also v high.Instead of Considering you kept adding to the bill amount.After payimg this huge amount, amount still showing on site is Rs 19075 which is v big and unjustified.
Now when i am trying to pay the August bill the amount has not yet been reduced. How am i supposed to pay such a huge amt again .pls make changes and send the correct amount bill to be paid for month of August.
I am a 74 yrs Old and have hardly any income and cannot afford to pay such an amt, yet I have paid so much.
Plss do the needful Asap and not not give me mental Stress.
I am Unable to visit your office bcoz of the current Covid situation.
Thank tou