NS&I
This number is listed by NS&I on its own website (Complaints team).
Source: “directly, they'll be happy to help. 0800 092 1286” (opens in a new tab). Checked 13 October 2026.
This could still be a scam call
Criminals can make their number look like a genuine one (this is called spoofing). If someone calls from this number and asks for money, bank details, a code or passwords, hang up. Then call NS&I back on the number on the back of your card, or call 159, which connects you to your bank.