I got a text saying I need to phone this number and quote a reference. Did actually ring until I realised it might be a scam. Phoned Santandar using their customer services number and they told me they haven't sent any texts and to ignore it
Scam
Got a text saying to call this number and quote a reference. The ID said Santander.
I phoned Santander on their normal number and they confirmed it was a scam