Tamil Nadu Electricity Board [TNEB] — People are asked to pay Electricity Bill Of May 2019 for this Month(May 2021).

People are asked to pay Electricity Bill Of May 2019 for this Month(May 2021). When I asked the same at Assistant electrical engineer at TNEB SITHALAPAKKAM, CHENNAI 600126, his response was, " Govt. has asked to pay may 2019 bill for current month and nothing can be done from our end" Is this the right way to pay the bill?

On 26 March 2021, my EB reading was 8116.6 Kw h and on 13 May 2021 it was 8319.8 kW h... Ideally consumed unit is 203. For 203 unit I should pay Rs.170 but they are asking me to pay Rs.1130 because on May 2019 consumed unit is 500.
It is happening to everyone. Please take appropriate action on this and requesing you to do justice on this.