[Black Sheep]

I've just upgraded my Touch Cruise to WM6.1 & restored my data. But in Messaging my sms/mms account is locked. There is now a message that says -'Account Locked
Company policy prohibits use of this messaging service on this device.
You cannot receive this type of message.' It's my personal phone so this makes little sense!

There is a similar message on my phone provider's email account (talktalkbusiness) & similarly the Internet will not work - but Exchange Server/ Outlook is working fine.

Any ideas as to how I unlock the messaging accounts.