You cannot remove bids from a live eBay auction yourself
Contact eBay Customer Support if you believe a bid is fraudulent or placed in error
Ask the bidder to retract their bid through eBay’s bid retraction process
Cancel the listing if you want to stop all bidding
End the listing early if eBay allows it for your account and listing type
Revise the listing to change it to a fixed-price format only before bids are placed
Block specific buyers from bidding on your listings using your blocked buyer list
Report suspicious bids to eBay if you suspect bid manipulation or shill bidding