Didnt declare item on my invoice and now i am being penalised

<p>I ordered items from the uk, the supplier provided the correct invoice and DHL didnt not declare an item on the invoice. I have alreayd paid customs for the items, including the item they said was not declared</p> <p> </p> <p>Now they are telling me i must pay a penalty because of DHL inablilty to to read an invoice. I had absolutely no involvment in the customs procedure so why am i being penalised/</p> <p> </p> <p>the penality is more than the value of the entire shipment.</p> <p> </p> <p>pathetic, you would assumen you have done this a million times before</p>