Ordered some parts from the US ( posted by USPS ) and tracked it down on the net and it said that it has attempted delivery but nothing was posted though the door saying they have been but no one was in?

When the US postal service sends a parcel and been through customs who do customs use to send the parcels out to the customer?

 

Parcel Force.

Look on the website and it's probably waiting for you to pay the charges.

 

Thanks for that.

I've found it at my local PF and need to pay as you said

Thanks again