How do I get eBay to stop a seller using a false address (my daughters) for her customer’s returns.

I have reported this numerous times but it has never been stopped and has been going on for several months.  It is causing the recipient (my daughter) a good deal of anxiety and is a complete nuisance having to try and deal with the deliveries she should not be getting. 
Why can eBay not stop what is clearly some sort of a scam as why would the seller be doing this otherwise?
I have messaged the seller several times but the problem continues. Can someone please help???