mattwnz:ISPs normally have a call centre operating every day including the weekend. Are you sure they are closed for 3 days? Do they have an emergency contact for when there is a service failure?
They don't have a weekend call centre. Annoyingly, they seemed to close their help desk 15 minutes early on Friday afternoon when I was trying to call them. Being on hold for this time out me over my monthly allowance of minutes on vodafone. Their 0800 number rejects mobile calls, so sitting on hold costs money as I had to dial an 09 number.
Anyway, this problem has brought out the geek in me. I've set up a mobile WiFi hotspot at home using my iPhone. I'm still on a legacy plan with vodafone that gives me 3 GB per month. This should last the weekend.