Action Fraud, which collects reports of fraud on behalf of the police, has issued a warning for people to beware of fake text messages claiming to be from Ofgem, the energy regulator, which offers bogus £400 rebates. But this is a scam and you should not reply to it.

https://www.moneysavingexpert.com/news/2022/06/warning--watch-out-for-fake-text-messages-from-ofgem-offering-yo/