I called the number on the waybill (can't recall which shipper it was but I don't know if it would matter) and the gal cheerfully refunded me the duty portion of the cost. I've heard of other people doing the same. As I mentioned, taxes they cannot do anything about, sadly.
Very interesting! What reason did you mentioned to them? Why should they waive the customs duties for you?
For women's clothes, the dues are 18% whereas the tax is 13%. The former are the biggest charge, if applicable.