Hi, Ive had this many times, as a fairly large ebay business Ive experienced your exact issue and various twists of it. As others have said if they go straight away with not as described then well you are stuck and have to take the return. If they return the right item or not is another question. I personally havnt had someone who returns a completely different item or empty box but I sell Items that are needed in quick demand, spares etc. Normally when a case is opened and they make up some BS, I say fine return the item as I have no other choice, and regularly they do not return anything and after 10-14 days ebay shut the case as the buyer has no tracking. (they are just hunting for money back from a weaker seller)
When it comes to people claiming to not have received goods but the tracking number says it has been delivered you cannot loose on ebay. It is rough as the buyer generally could have not received it but the only hard info/facts you have is that it is tracked to their door. Ive had my fair share of fraud/scams etc to harden me up and to not believe anyone.
I have been on the receiving end of this however. I bought 24 rolls of packing tape that never got delivered, tracking said it was. Opened a case knowing id loose it and I did. This time it was yodel who is the worst and most slated courier in the UK. I had to take it on the chin as literally was nothing I could do, luckily it was only £20 or something but still knowing the system I new id loose it and came away feeling annoyed at ebays system, but I personally cannot come up with a system to fight this other than use couriers that are more respected and not likely to steal something and say they delivered it. I now check to see if a seller is using yodel etc, hermes is close at times.
Because of how the ‘not as described’ system works, and how its got me as a seller many times I still have to say if its tracked and delivered then thats how it is. Even after being on the receiving end as a seller I need to win sometimes.
When an item is tracked like yours, ebay shut the case and then they change their minds to not as described or missing, Ebay will not open another case. Multiple times ive said I feel this buyer is suspicious and is going to try something else, ebay have said well they cannot do anything now with a future case.
Of course then there is paypal the buyers next line, I have also had buyers proceed to change their story with paypal. In this case I have got straight on to paypal described how they are as a buyer, and what they have done on ebay and then proceeded to change their minds, paypal have always shut the case immediately in my favor. I like to think they do this because of the facts provided but I haven’t been asked to prove whats gone on, so I don’t know if they have believed me because I’m a large seller, or because maybe that buyer has had a history of doing similar. Either way I always call paypal not email, and speak to them straight away showing my concerns, they are normally very on it and as a bonus English.
Sorry its long but every time I have had an issue like this I have looked online for help and really not found anything so from experience I now like to help other honest sellers where I can