Call from unknown number

[jabrker2]

I have had multiple calls this week from this number: 0330 303 5315

it was a guy saying he was calling from O2 to offer me a discount on my plan and a free tablet? 

(I think related to how long I’ve been a customer and my data usage)

I was unsure if this was a legit number or not, and how they would have my details. 

Does anyone know?

[madasaf1sh]

@jabrker2 

Never trust a call out of the blue, offering you any deal it will end up costing you more in the long run.. 

Just block the number, and ignore the caller..  This is probably one of o2's (un)trusted partners... 

[Bambino]

@jabrker2 Do not respond to cold callers.

It's likely to be a scam.
Block the number and report it free to 7726.
Don’t open any links sent to you or give the caller 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

[jonsie · Accepted solution]

Apparently it's a genuine number

https://twitter.com/o2/status/1048222652404572160?lang=en

However, follow the good advice above from @Bambino & @madasaf1sh