The same courier company came and pickup the wine yesterday afternoon,i thought they would give me the replacement at the same time to save some $$, but they didn't. still waiting for my replacement wine.
Its quite normal for companies to wait for confirmation that the stock has been picked up / returned to the warehouse etc before shipping out replacements. I'm sure you could appreciate that it is also in the interest of the retailer to make sure the product hasn't just gone walk about and that it is all just a "story".
Hope your wine arrives safe and sound eventually.
By the way if the courier they use is a rather large company driving orange trucks and has 3 letters in their name do not be surprised if they stuff up again or break it, they are bloody hopeless.