Getting a call

[Jack15]

I received a call from 0333 344 6987 claiming to be O2 I just to confirm that this is an O2 number. 

[madasaf1sh]

@Jack15 

o2 will never cold call you to offer a better deal or for a discount, and that number is a Scam... so just ignore it.

[MI5]

@Jack15 

O2 don't cold call.

Block the number and do not follow any links.
Forward the scam text to 7726 - It's free.
Other ways to report here including Action Fraud website
https://www.o2.co.uk/help/safety-and-security/phishing-and-smishing-advice
How to block a number:
https://www.samsung.com/us/support/answer/ANS00062352/
https://support.apple.com/en-us/HT201229

[Jack15]

But they had my phone number, home address, and my latest o2 bill cost

[MI5]

@Jack15 

They are so called "trusted partners" which are best avoided at all costs.

O2 share your information based on your privacy settings which can be set in your MyO2.