ummm you must have some source of mental issue (and i really don't mean that as an offence).
here is an eg:
i ordered a bunch of sups once.... postal serivce says it was delivered and it was not.. i got nothing..... end of story.
NOTHING to do with where i bought it.
this was out of over 50 orders, and is VERY rare, but it CAN happen!
no they don't carry clen "lol".... so unless you can prove they lost it you cant do anything and that HAS NOTHING to do with RUI!
WTF do they have to do with the postal service?
They did there part (sending it out).
sorry for your loss...