A similar experience for me...

A few months ago I ordered a bike thing for around $12 NZ on AliExpress. It was shipped through via China Post Registered, and according to the tracking on AliExpress, and NZ Post it arrived in the country about 3 weeks later.

A few days later I received an email from AliExpress saying that it had been delivered, yet no parcel around the house... Looking at the NZ Post Tracking website using the tracking number I found out it it had been delivered to Nelson for some strange reason (opposite end of the South Island to me - I'm in Invercargill).

I decided I would leave it for a few days in case it arrived however around 5 days later I looked on my AliExpress account and noticed that AliExpress had automatically confirmed it as delivered - as it had timed out. Such we hadn't had a parcel arrived yet, I opened a dispute with the seller with the reason being "Not Delivered" explaining to him that according to the tracking it had been delivered to the opposite end of the south island, some 900km's away.

The Seller asked me to contact the local post company (NZ Post) and to close the dispute, which I contacted NZ Post (and didn't cancel the dispute) however I didn't get anyway with NZ Post, so i informed the seller that the local Post Company had been no luck. The seller then told me that they would resend the parcel and to close the dispute so they could, however because it had been now about 8 days since I opened the dispute originally - I asked for a refund, due to no delivery (and to be honest - the communication between the seller and me hadn't been the greatest as they insisted that I was blind - and English wasn't their first language).

A few days later I got a response from the seller saying that they would refund me because they were currently out of stock of the product (after just telling me that they had it in stock - and their store site on AliExpress still said it was in stock), but to be able to I needed to close the Dispute so they could. However i wasn't falling for that as I had read on an AliExpress webpage that to be refunded the dispute needed to stay active, so I messaged the seller back to tell him that I was not closing the dispute - as the reason I had opened the Dispute was still accurate and that he was to refund me via the AliExpress Dispute Method.

A few days later I got a message back informing me that the seller had accepted the dispute, and AliExpress was refunding the monkey back. The Seller messaged me and asked me to leave positive feedback as he had done what i had asked. To be blunt, I left a feedback which explained the experience I had had.

So since then I've never actually had the original bike bit delivered - so I can only assume some poor person had it delivered to them in Nelson and they decided to keep it. To be fair to the seller i don't personally believe it was there fault with how this isn't the first time its happened with NZPost (we've had a few parcels sent to Nelson for some reason - my laptop was redirected there when it arrived in the country but it eventually made its way down south) but because of how he responded to my dispute, I added him to the list of sellers that I wouldn't be buying from again. I ended up ordering the bike bit from another seller and it arrived to me in Invercargill 2 weeks later, through AliExpress Standard Shipping.

So my advice is to wait a few days, as it might come, and if not have a quick check around the outside of the house to make sure that the postie hasn't left it lying in some weird place. If not send the seller a message and if its still not resolved open a dispute before the cut-off-date.