Sheesh....so what did the address on the package say? Was it correct? If so, it's the USPS that screwed up. If not, you need to check and see if it was a typo on HK's part or on your part. It's VERY unlikely that HK re-types any address in their system....
So please explain where the mix-up occurred.
Calling people "shills" with absolutely NO proof is actually callied libel or slander depending upon the mode of transpartation. Criminal libel in the US is almost non-existant. However, in civil cases, the record is $222.7 million. http://en.wikipedia.org/wiki/Defamation#United_States
Your claim of shilling falls under letter "i"
Defamation per se
The four (4) categories of slander that are actionable per se are (i) accusing someone of a crime; (ii) alleging that someone has a foul or loathsome disease; (iii) adversely reflecting on a person’s fitness to conduct their business or trade; and (iv) imputing serious sexual misconduct. Here again, the plaintiff need only prove that someone had published the statement to any third party. No proof of special damages is required.