South Bihar Power Distribution Company [SBPDCL] — excess unit charged

Address:

GANGA VIHAR COLONY ZERO MILE, NEAR MAHANT BABA STHAN, Bhagalpur, Bihar, 812001

Today one executive came from sbpdcl for meter reading, and he is saying that the meter is defective you have to replace it from the department.
But he charged more than actual reading by saying that it will be calculated on average basis i.e 434 unit.
My question is that when i click a picture than the meter show 32654.7 and previous reading and previous reading was 32266 than it comes to 388 unit which is less than 434 by 46 unit.
How i will get adjusted with this extra 46 unit charged by your side