When the shop won’t tell you ‘when’ it means, usually, but not always, that they are flying blind with the distributor. It could be that they want to bulk it up and waiting for more orders… Ran into exactly the same thing with some brass I was after (found them in the end). Super shady and f*ck them right in the ear if they won’t tell a paying customer when paid goods will be delivered. That’s just appalling in my books.