That's a long wait Pete. I've used pinball centre eu heaps & they aren't fast - but normally here within 2 weeks (2.5 at worst). Seems a standup business never stuffed up order, threw in extra flashers when I said one arrived not working etc. Whoever you are dealing with I'd do as Nino says and email giving them a deadline to respond (maybe 48 hours is a bit fairer). Then it's firmly on record. I wouldn't wait the full 45 days - if you don't hear boo from them after the 48 hours lodge with paypal.

I don't know what the other European parts suppliers are like but I've used Pinball Centre a few times also. Everything has always arrived well but it's always taken a good 4 weeks to arrive.