A related problem I’ve encountered on Amazon is wrong quantity of items; ex, order three 8 packs and instead get three singles. Their return policy doesn’t have the ability to correct for this as far as I’ve been able to find.
I've encountered this problem with superglue. I thought I'd be clever and setup a monthly subscribe and save and I ended up having to send back a single tube twice - the first time a single replacement tube was sent back to me, and the second time I received a credit and they cancelled the subscribe and save. It's basically impossible to get through their automated returns system to get the desired result - that is, receiving what you've already paid for.
Years ago, a similar situation would result in a "keep the item we sent by mistake, and we'll dispatch the quantity you paid for." This behavior seemed to rely on human support personnel.
When there is a mismatch like that you can only send it back for refund, sadly. They can’t understand the issue.
I ordered one of something and got a ten pack and it took me about an hour on the chat to get them to understand I wanted to send nine back. It was pretty expensive stuff so I’d’ve felt bad keeping the other nine but man it was getting tempting.
I also bought some toothpaste on Amazon recently and it was the wrong kind. Their return page wouldn’t let me return it for any reason - I needed to get on chat support to get a refund. You’d think “you literally sent me the wrong item” would always be a good reason but apparently not.
