Use the link below to get a callback from Ebay.
Hopefully at this time of day you would be called by Dublin Customer Services.
Explain that your buyer has added inappropriate and offensive images to feedback left and ask them if the images can be removed.
https://www.ebay.co.uk/help/eua?id=5190
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)