spoof bidding on items.can anyone help?

im not sure this is the right place for this but here goes.i recently put a zodiac shield up for auction and shorty after recieved a pm from a intersted buyer.the buyer(ill leave names out) asked if they could buy the shield for a set amount(even tho there was no buy it now facility) and i replied yes as long as there was no one else interested.upon checking the auction so i could close it in good concience i found that there were a few other interested ppl.i told the person in question that ordinarily i would be happy to sell but it would not be fair on the other ppl intereted who simply wanted to see the bidding go through properly.after this i was called a noob time waster by person in question.the bidding finished and i found the same person had made the highest bid so being fair i contacted them over payment where they refused to aknowlage what i was talking about.after this they put in a spoof bid on a high priced axe of i had on sale as well and again refused to deal.not wanting this to drag on i left my comment on there acount and forgot about it.i have just seen that they have left 5 bad comment on my account now trashing my rating as in the past i have not sold much on guru(btw the other reports are all good).what can i do about this as its a big waste of my time and i suspect he is getting guildies to spoof other auctions i have going?is there any means of recourse?thanking u in advance and sorry if this is the wrong thread for it!

leave your auction username here, along with the ID of the of the auctions in question. Dralspire is very good about cleaning out the fakes

Please get in touch.

thanks a lot guys i didnt think id get any help user id is deus tex if u check my other autions u can see somthing aint right about it im still waiting on these so called "buyers".ty for replying so fast

futher to my last the auction ids are 110248 and 110233.the auctions im sure have been futher ruined are 114295 114255 and 114261.i noticed that all were purchased using the buy it now feature shortly after each other by buyers with no previous feedback.coincidence?also 2 of the items were bought by the same bidder....please help as childish gamers like this is what can ruin gaming comunities yet again thank you.