Think this logic.
In case of import of goods clearing and forwading agent takes care of goods from the port to stores. He will incur lot of expenses from paying customs duty, vessel charges, etc till paying transport charges. He will make payment and get reimbursed.
I have seen a bill where his total claim was around 20 lakhs and his service charges was Rs.20,000. If he need to collect tax for total amount then service tax will be more than his service charge.
I think the statement is true. But i am not sure.
Please do reply.