The type of email you have received has been circulating for years. It is not just BT customers who receive them nor is it only the BT ISP header that is used in the scam. Other ISPs also get named in the same type of email and or texts.
It has been put to BT in the past that their systems have been compromised and that it may be that some of their staff may be selling/using customers details for illegal purposes. This was denied.
I can not recall what the exact content of the denial was but it was along the lines of it being a coincidence.
Looking at the email you received if the scammer actually had your account details why wouldn't the scammer use your name in the email which would make it look more genuine and as in your email why would they tell you to use a Vodaphone app or call free from your Vodaphone mobile if they clearly know that you are a BT customer.
I also doubt that a human is actually sending out these emails, albeit that the program will have been set up and set to run by a human, they will be computer generated in their thousands if not millions and given that they only have to generate four random digits, they are bound to come up with the right numbers for some of the six million BT customers account at some point.
In any event, I am not hear to defend BT or any other ISP so I will look forward to hearing how you get on with your complaint.
