So I had 2 out of 3 orders not delivered but it showed up in the tracking info as delivered. The delivery companies did not help me as they needed the sellers to contact them - which they did not and Aliexpress is siding with the seller because the items show up as delivered.
I realized there was a scam whereby sellers would just send to a friend or themselves in the recipient country and provide you with a tracking number so that when it's delivered, you will see it as being delivered but actually it would have arrived at another address. They can do this because there is no need to provide evidence of the delivery address. GO F*CK YOURSELVES YOU SCAMMING ARSE HOLES!