It's probably 186k's fault
186k are without doubt the most stupid cretins available. Their rich owner just buys small ISP's left right and centre without bothering to stop to see if they can actually support the userbase. I also had a large number of small businesses signed up with the excellent Mailbox who were had brilliant support -2 rings on the phone and you're talking to an actual Engineer.
186k bought them out and you couldn't contact them by phone because they were so busy, so they moved the call centre to India where they answered the phone a little more but couldn't really do anything there either. Then they moved it to Ireland and things were a little better although they still made stupid billing and technical mistakes. Throughout this time however, their sales line was always answered by a friendly sounding English person who couldn't support you at all (they actually said that in the phone menu).
I have a fairly good idea of what happened - 186k bought out some companies that were reselling lines from Tiscali. Because they couldn't identify which customers they had bought they refused to pay the bills so Tiscali were forced to put up block pages.
Thing that makes me laugh is the indignation that 186k are treating this with "It's all Tiscali's fault - OMG how dare they put up block pages!!oneone". Yes well 186k did exactly the same thing a few years ago but worse. They actually cancelled ADSL lines that they thought weren't being used without contacting anybody and then said it would take 5-10 days to get back on when people rang up. When I asked for MAC codes for 5 accounts at once the engineer was very surprised and said that everyone else just said they wanted to come back.
I really hate 186k - they couldn't find their arses with both hands, a map, a torch, a TomTom, help from their friends and a big painted sign saying "Welcome to your Arse". Sorry for the rant but the amount of people they have screwed over by buying and ruining well managed ISP's makes me mad. I really hope all their customers migrate away from them and they go bust.
....Paris Hilton 'cause I said bust.