As well as taking the good advice already given, you should ignore any more messages.
You probably need to have a look through your listings as you do have several duplicates (although you may actually have 2 items?).
The ones I have noticed are the bookends and the portrait of Kenny Lynch - both of those items are listed twice.
"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)