Best thing to do is just look at the selling rules closely. I fail to see what is going wrong, only time I had issues is when I stated on one of my auctions that the buy could send cash in the post under the buyers own risk. eBay though I was promoting the idea apparently. :roll:
Anyway, long story short, I havn't had issues like that in the past and I have sold close to 100 items in the last year. Only issues I have had is with pushy buyers bidding on my items and not wanting them because of overseas costs.
You must be putting something in the discription that is against their rules, what was the reason(s) they gave as to why they took action?