... Ugh.

I grabbed a Priority Mail Flat Rate envelope today to ship out some carts that were part of a GameTZ trade. I wrapped the carts (three SFC games) in a plastic bag, and then wrapped that with bubble wrap; afterwards I taped them both so the carts wouldn't move around. Then I stuck it in the envelope and added the shipping label and whatnot.

So I go to the clerk, and he tells me I can't ship it that way. According to him, "Only documents are allowed in a flat rate mailer."

... What?

I checked. He's full of SHIT. The carts did not warp the envelope in any significant way. I sealed it properly, and he pulled this shit on me. Not to mention they've always said I can't use tape to reinforce the package, when the rules say I can.

Well, I'm fed up with this. Does anyone know who I can contact to file a formal complaint? I think this proves these clerks have never read the damn postal rules. Do I have to complain to my local postmaster, the state one, or the national one?