The line got upgraded through zen on wed and since then I could not log on to adsl trough zen.
After a few tests and trials an various phone calls to the helpful support crew it turns out that the modem router I have is not compatable with 21cn (linksys WAS54GS).
No ones fault or anyhting, just one of those things I supose.
Pulled out an old spare modem that was gathering dust in the cupboard and it works. so back online but at present no network set up until i can sort a new wifi router.
Just hope the upgrade to the higher speeds works .