About Abnormal Monthly Bill — Abnormal meter reading during March 2021

We stayed in our house in Iluru Village, Thotlavalluru Mandal, Krishna District, AP during March 2021 for one week between 11/3 to 17/3/21. We used 4 bulbs of 60 Watts in night and used one table fan and one ceiling fan during day and night for which we have been served a bill for rs.3370 for 509 units consumption. We submit that, we did not let out power to any body during these days and consumed limited power for our domestic use only.
The reason for higher meter reading without consumption may be examined and do rectify the problem so as to pay bill in scheduled time. Our current service no is[protected]