I see that as a "market platform" problem. I used extensively amazon.de/co.uk with deliveries in Romania, in early 2010's for a bunch of things. But since then they also opened up their market to any seller, quality dropped, shipment became preferential, or 1 cart could result in 2 separate shipments.
Aside. I've seen the exact same problems with our local Amazon "competitor". As soon as they became a platform marketplace I've started using them less and less because of the same quality/delivery issues.