While the information does not show as available to customers the number you are contacted from is available to the networks team. We can not share this with customers directly.
Yes, the fact that the number is available to the Networks team is exactly my point! If I had a "number withheld" abusive / fraudulent call at a time I could quote accurately in reporting the call to your website, then you could (confidentially, without telling me the number) follow up and block the miscreants, if justified. That would improve your service considerably as virtually all such calls are number withheld or spoofed.
Interestingly, I received a prompt response from the TalkTalk nuiscance calls team (email@example.com) but they claimed that even TalkTalk can't get such numbers, only BT can do that. The exact quote from them was:
"TalkTalk don't have the ability to see the number being withheld, but BT do. We are unable to take any action on withheld numbers or numbers unavailable.
We do have an 'Anonymous Caller Reject' boost, which costs £3.88 per month. This can be added to your service via your 'myaccount' section on our website.
If you choose to have this boost, please be aware that most doctor surgeries, hospitals and banks withhold their numbers. It may also be wise to inform family and friends about this boost so that they know that they will have to show their number for you to pick up."
This response is important because it emphasises that if people pay for Anonymous Caller Reject they may find themselves rejecting calls they actually need to be able to receive!
We offer as much support as we can in terms of blocking unwanted calls, hence the release of the new reporting feature.
However for whatever blocks/restrictions we can implement, there will be those who try and subvert it.
I appreciate your comments and will pass these on for consideration, as maybe adding a time and date of the receipt of "unknown" calls could help identify them.