Goods transport agency service

dear learned friends

Please clarify my doubt

A Private limited company receives Goods transport agency service, the Lorry freight per trip is less than 750/- how ever the goods transport agency raises an invoice for 5000/-, ( more than Rs 1500/-) The invoice  has 10 consignment notes each less than Rs.750/-, now my question is should the company pay service tax on the invoice as it is more than Rs.1500/- , Is there any difference in service tax liability between Lorry frieght for Inward transport of goods and outward transport of goods.

thank u

karthi