Yesterday When I making the E Payment of service Tax from Canara Bank, Payment declined & Challan not generated, Hence i once again tried to make payment & it was successful. Later when checked the Bank statement both the Payments are debited to Bank account with Challan Nos. Then I sent the mail to NSDL with CC to Canara bank, to revert the First payment. But not got satisfactory reply from them. Kindly let me know, what I can do next to get back the amount.