You might need to contact eBay about the fee, but I would be speaking to someone higher up than just calling the call center (mostly they just tell people what they want to hear to get rid of the caller as fast as possible) so the 'have us call you option might be best

I don't know about these days, but several years ago when there were water restrictions in my state, I had listed a Tap King drinks dispenser

I got a notice from eBay they had removed it because it violated some policy or another for water usage in a time of water restriction

After a pause for a what the ??? moment, I got onto eBay who had said because the word 'tap' in the listing it was removed

The item did not use water,or connect to water but the word tap tripped the eBay key word bots

So it is possible this person (buyer) may have reported it (although odd anyone would bid,especially that much) and then report it, when anyone can report anything without bidding. Certainly risky for them if eBay don't remove it and they either have to pay up or cop a non payment strike

Or it is possible the eBay key word bots are still alive and well