PostNL is pretty similar to something like the USPS in the USA. They do international, but mostly under the TNT Post names in Europe , and afaik not in US. For shippings from CN to USA it doesn't make sense at all.... since both of them are not their markets
(
https://en.wikipedia.org/wiki/PostNL )
Also, I'm not aware of any ship or container service they have. Only freight trucks for local delivery (well, within NL). I'm living in NL my entire life, I never saw a container or ship with their brand
I think al those xxxx stores have similar tactics: Open a store, label it <4 digit random number>store, advertise with very low prices, get money, post a random tracking no, and run....
Are you able to retrieve a weight indication? That probably would confirm it's just some random tracking no they abused for this scam.
If you're getting anything at all it will be bloated cells, batteries with rocks (to make up for the weight), and invalid capacty ratings (280Ah cells sold as 420Ah as some have experienced), or sell batteries by doing creative math (as some do: 4 cells of 3.2V/75Ah in series will give a 12.8V (4x3.2V) / 300Ah (4x75)
General it results in filing a claim. Ali frequently denies the claim (they don't know anthing, and if the seller says the customer isn't using proper equipment they just close the claim). Paypal... Well, haven't heart too many good results either. I think you're going ending up filing a claim at your CC company.
For anyone who hasn't bought cells yet: Go to a REPUTABLE seller on Alibaba, with decent reviews and a longer existence. Aliexpress is quite a lucky shot. Bloated cells, overrated cells, used cells, bad packaging, fraudulent sellers... I've seen them all. Look just at topics here: The majority of people having issues made the mistake ordering on Aliexpress without doing properly research.
Alibabba is neither 100% warranty, but it's much likely to get something you can actually use.... Want to minimum risk? Get a vendor with a US (or wherever you are located) warehouse. If you have the time, get properly matched cells at eg Amy (Luyuan)