Account changes not possible

[#1]

I am getting an error message when I log into Manage Account:

 An error has occurred

You cannot make any changes to your account while there is a phone order 
in progress.

WIth a further message on the Call Features page:

Unable to change service

You cannot make any changes to your account while there is a phone order in progress.

You currently have an order in progress to remove call features

Your call feature(s) will be removed from your account on the next working day.
Please note: If you've requested to remove any call features, you cannot add or remove any further features until this is complete.

I have not asked for any changes. What is going on?