Yes, I have had things in the past held up in customs for a very long time. Once I had a bunch of frankincense shipped from Oman. It got stuck in Customs, which wanted to know the name of the manufacturer. I told them the name of the biz I'd bought it from. No, they wanted the manufacturer. I said no one manufactures it. It's harvested from a tree by peasants who sell it in the souk and the business buys it and sells it to me. They insisted they wanted the name of the manufacturer. I said, "God." After 2 more days, they decided that was good enough. I finally gave up on trying to import stuff from Oman, though.