a guy keeps calling from +44 20 3940 2125 with loud "office" noise in background pretending to be from O2 and telling i've been selected for 50% off tariff promotion and that i should wait for the code to arrive via sms. then the account access restoration code arrives from O2.
if one's to tell him the code, he can take the account over. DON'T do it!!!
Thanks and it's a well known scam.
O2 even text you before sending the code telling NOT to give it to anyone.
Numbers can be reported to O2 by forwarding to 7726.