on 25-08-2024 21:03
I have received an email purportedly from O2 -
on 25-08-2024 21:19
It's a well known scam.
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