Received wrong applicant's rejection email

Received a rejection email from home office for a visit visa application but looking at the attachment it doesn't match my Name or application number.

Application number is correct on the email subject however the attachment with decision letter is referenced to someone else including name, application number and reason for rejection (false document for a bank account which doesn't even match mine).

Wondering if anyone else has been in the same situation? What do you advise on doing next please?