Punjab State Power Corporation [PSPCL] — bill paid last month not deducted fully, so wrong billing

My consumer id is [protected]
I have deposited my electric bill dated 24/04/2020 for rs.7710/- on 08/05/2020, in which the closing reading was 241810
However in the bill dated 22/05/2020 for rs.11120/-, old reading 241006 of bill dated 24/04/2020 has been taken instead of 241810.
However net previous adjustment has been shown at rs. 8386.79p, which has not been decreased from the gross bill of rs.13547/-
You are requested to correct the bill at an early date.
It is further requested that till the correction of the bill, the due date of payment of the bill may kindly be extended.