Good luck, I bought a car in Feb and got the log book 5 months later.
There is an email option.
https://live.email-dvla.service.gov.uk/w2c/en_gb/forms/Auto%20Response?button=none&decision=An+error+in+the+name+and%2For+address+on+the+Registration+Certificate+V5C&lang=en_gb&sfdcIFrameOrigin=null