There are times when a user may wish to turn CallSafe off temporarily.
If a user does so, they lose all the registered information and have to start again from scratch to turn back on. This is painful.
I can understand why TalkTalk would not want to store data for a user that has it turned off.
So why not allow a user to upload a text file with the "Allowed" and "Blocked" numbers to reset CallSafe on, if it has been switched off temporarily. Text files should be safe from viruses so not a threat.