cold call

[PETEL]

Did O2 call me from this number 02080764506

[jonsie]

Very unlikely

Scammers use London telephone codes

Hopefully you gave no information

Block the number

[Bambino · Accepted solution]

@PETEL 

Very likely to be a scam caller. Never agree to anything from a cold caller, no matter who they say they are.
Block the number and report it free to 7726.
Don’t open any links or enter any information.
O2 advice here:

https://www.o2.co.uk/help/safety-and-security/phishing-and-smishing-advice
https://www.o2.co.uk/help/safety-and-security/unwanted-calls-and-messages
https://www.actionfraud.police.uk/

How to block a number:

https://www.samsung.com/us/support/answer/ANS00062352/

https://support.apple.com/en-us/HT201229