IF the Client doesnot pay full invoice amount..????????????/

your receipts are includiong of service taxes so you will calculate the reversed mechanisum & pay the service tax

yes reverse mechanism will work

you have to pay the full amount as the amount deducted is for LD charge which is different from the invoice amount.

The income (amount received including TDS) shoult be treated as cum-tax.  Tax should be calculated accondingly.  Further, taxable value+tax calculated should be equal to the amounts received.