Cancel order and leave negative feedback?

[3narf]

I thought I sold my car yesterday. It turned out the buyer just wanted to come and look & test drive it. He got funny when I took issue with this, and told me to sell it to someone else.

I had 1200 views and 100 watching and now I have to readvertise it, so I'm less than impressed. I can't relist it unless I cancel the order and if I do I won't be able to leave negative feedback for this timewaster. 

If I don't cancel the order, and just start a new listing, I'll get charged a fee for selling it the first time! 

What should I do?

[plpmr]

Adding to the advice already given -

You have listed the Landrover and you have two problems -

You state you will only allow a test drive after a deposit has been paid – deposits are against eBay policy.

You have listed in - Vehicle Parts & Accessories>Car Parts>Other Car Parts – meaning you will be hit with very high fees as it's in the wrong category.