Just had a scammer call me...

[ddddd]

source number was:  028 4466 6034, from Downpatrick, Northern Ireland

They knew I have an O2 account, and I only joined recently... ergo... O2 / Virgin have either had a data breach, or it's an inside job.

[MI5]

They will be so called trusted partners but more commonly known as scammers. 

Block the number and ignore them.

You can forward the number to 7726 for O2 to investigate.

[pgn]

Also go into your MyO2 and uncheck all the data sharing options in your Contact Preferences - app will send you a OTP txt to do this @ddddd :

[ddddd]

@ MI5 - thx for nudge, I will report it in.

@ pgn - also thx, I had those options that you show disabled already, but the four other options for "best way to contact you" were all ticked, yet I would never agree to anything like that, so it's a bit naughty and cheeky of O2 / Virgin to auto assume that I would have agreed.  Anyway, now un-ticked.  Notwithstanding that, I cannot see how those four options would have anyway led to a scammer call offering me 40% discount.

So, what I still don't understrand, and probably never will, is how they knew that I have an O2 account.

It can only be data breach or an inside job.

It doesn't inspire me with much confidence.

[pgn]

More on that number here @ddddd - if you are interested.

https://who-calls.me.uk/phone/02844666034

[MI5]

The trusted partners have full account access to us all @ddddd