South Bihar Power Distribution Company [SBPDCL] — Unusual increment in electric bill

Sir,
Generally i submitted my bill at time.my consumer no is[protected], Name-Atisundari devi.last bills are Rs 91, rs 122, Rs 100 i.e already paid .in the month of may bill is increased by 6% without any usage of extra appliances...so, i request u to check meter or bill .so that i can pay my bill at time ..
Regards