Tamil Nadu Electricity Board [TNEB] — refund on bill

Address:

Chennai, Tamil Nadu, 600107

On 18th may 2019, rs 800 has been deducted from my account against my eb bill consumer number [protected] through net banking via tneb online payment portal. No bill generated and below pasted is my online transaction details of pnb

18/05/2019 tneb/0306002380265141805201971/[protected]/eb bill 800.00

Again i have paid the payment through card payment via same portal and it has been reflected on tneb portal as paid. So please refund rs 800 deducted from pnb.

Payment details through axis bank debit card
18 may 2019 ecom pur/tamil nadu el/chennai/180519/11 800.00