Can ebay sellers cheat on bidding?

I was bidding on a idem and i was out bidded and i let the idem go. Then a day later i won it at my max bid i placed. Im guessing the seller had a shill account and out bid me and canceled his bid at the last minutes. i sent a message and the seller said he had to cancel the bid cause a under age kid bid on... show more I was bidding on a idem and i was out bidded and i let the idem go.
Then a day later i won it at my max bid i placed.
Im guessing the seller had a shill account and out bid me and canceled his bid at the last minutes.
i sent a message and the seller said he had to cancel the bid cause a under age kid bid on the idem and was messaged to cancel the bid, i personally think it's a lie.
And he did the samething with an other idem but the idem has not ended yet.
My question is can they do this and if not how do i go about reporting them?
And if i can't report them can i leave a feed back saying how i think they cheated on the bidding.
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