sorry to possibly worry you, Are you talking about the landline phone.
If so have you checked on the Members Centre under Phone Calls, then view, then look at the calls remaining and the credit limit, if they are both zero you have run out of credit.
Also check your itemised call that will tell you where your additional costs have gone, go down to the bottom of the block and you can download a CSV file for the month
Broadband phone, no experience of that one, hopefully some one will be along to help you soon
