I recently had a cancelled transaction with paypal. I payed, an hour later the shop told me they don't have the product available. The payment was cancelled.
And then paypal froze the money in my account: "money withheld". 13 days after the transaction the money is finally back on my bank account and I think to myself: Avoid paypal, especially for large sums of money.
Of course Paypal loves to get an involuntary free two week credit from me and work my money without giving me anything back. And that they just freeze my money just shows you what kind of company paypal is.
If you, too, live in Europe and get into trouble with Paypal, don't hesitate but contact FIN-NET, the european bank complaint network:
The more people complain, the more paypal will have to behave itself.