Calcutta Electric Supply Corporation [CESC] — Double payment for same bill

Address:

Kolkata, West Bengal, 700067

Respected sir/madam,
Myself tanmoy halder, son of mrs. Anjali halder. Consumer no. [protected]. Resident at 21/55/1 canal east road, kolkata-700067.
Sir/madam, i have facing some problem with online payment. The bill of october i was paid two times... One from sbi credit card another from paytm. Both transaction shows successful payment. Actually i have another meter name with mr. Ashim halder, consumer no. [protected]. Following problem has happened with those bill also.. Kindly inform me what should i do...