I use Interparcel a lot and 95% of the time I don't have a problem. Whenever a problem occurs it always seems to be on a Sunday or Weekend when there is no way to contact anyone, surely an operation as big as this would have 24 hour coverage or an alternative way to access your booking. For example, I have just booked a collection, Paypal payment has gone through....but Interparcel site has crashed before any documents have been generated. This has probably happened to me 3 or 4 times in the last year. My other observation is that the instruction email issued is exactly the same regardless of which courier firm you are using and where you are sending your parcel. For example, some Parcelforce services dont require you to print a shipping label...not mentioned in any of the info from Interparcel, just a lack of shipping label, leading you to think there's a problem with the site again.