Have you had one of those scam BT callers?

I have , quite a few times and I have grown wise to it. It's always an Indian who give a typical English name which is so obviously false and they say that have detected a fault on your computer or someone is using my account or they say they will disconnect the internet. They more often or not target elderly and vulnerable people. They also say they're calling from London when they are actually calling from call centers in India. Please be aware of this, they are trying to gain access to your bank details. I have seen many youtube video's where this goes on and they are eventually caught out, some get aggressive, they think we are stupid !.