Because this is a low value item and because you were readily refunded I’m not sure how a neg could be worded without sounding petty. I’d just let it go but that is just me.
I wouldn't give a negative but a neutral just to let others know what happened but that's just me. I save negatives for people trying to con my money or extremely rude. I've only given 2
on eBay and they were well deserved.