there is no aditional handling fees because postage is paid in full.
administration is a few forms at customs but you did not ask for them to deal with customs on your behalf.
money collection lol wut? the only money they are collecting is a fee for work you did not request.
clearance of parcels, erm they clear customs when someone pays the fee, if parcelfarce didnt pay the fee on your behalf you would have recieved a letter from customs requesting the vat/duty and with no fee attached, by law customs cant hold a package for more than 2 days without sending as letter stating why, what parcelfraud do is make sure this never happens so they can charge for a service without the reciever ever having a chance to say they dont want it.
all postage is paid regardless of any handling fee.
it should be made illegal or a service which you have the choice to refuse.
aslong as you pay any customs/vat parcelface arent allowed to hold your parcel, if your prepared to visit the depot you should be able to get out of paying the fee