import duty

I imported an item from the USA , not available in Ireland or the EU. It was a large item valued at about €350 plus carriage €100. I have received a bill from the courier for duty paid on my behalf for €150. I emailed and wrote to the customs addresses I found on the net but got no reply. What do I do now?..thanks

just ask courier for the receipt

What was the item,and what was the breakdown of the bill between duty,vat and admin.

In answer to what do you do now,pay the courier,if the charge is correct.

As an example,say your item had a duty of 5%,you add your purchase price plus all shipping and insurance costs.This amount is the base for the duty calculation.
So,€350+100*5%=22.5.Add VAT @23% on the base price plus duty (108.67).Add say 20 euro customs clearance charge,there's your €150.

As you have posted this in consumer rights,what right do you feel has been compromised?