... and that's exactly what you were required to do.

I had a buyer recently who left a neg saying "Item never arrived and was probably never shipped. I now have one very upset little boy.".

I checked their feedback left for others and found out of their last 200 comments, they alleged 22 items hadn't arrived and 37 were not as described... that's a whopping 59 red dots on the same page - all with almost identical comments, and every last one mentioning one very upset little boy.

Instead of responding to the request, I opened a chat with an agent. Within about 10-15 minutes, the request was closed in my favour (and it was an untracked item), and the feedback was gone - all 59 false claims - and so was the buyer.

Rest assured, if there's a visible pattern of abuse, eBay will most definitely take action