That you have raised the bill for full amount and paid tax on the full amount. But you were paid the bill as reduced by Rs 9.00 lacs + ST by the client. I am right.
According to me your case falls under Rule 6(3) which read as follows:
"(3) Where an assessee has issued an invoice, or received any payment, against a service to be provided which is not so provided by him either wholly or partially for any reason, or where the amount of invoice isrenegotiated due to deficient provision of service, or any terms contained in a contract the assessee may take the credit of such excess service tax paid by him, if the assessee,
(a) has refunded the payment or part thereof, so received along with the service tax payable thereon for the service to be provided by him to the person from whom it was received;
(b) has issued a credit note for the value of the service tax not so provided to the person to whom suchan invoice had been issued.”
Your case falls under Rule 6(3)(b), {attention is invited to parts shown in bold}and you are entitled to adjustments against current liability.
regards
CS Saju Philip