Provide the theme summaries for the following conversation: 

Jeremy: Seems I can't log into my work account today. Have you had any problems today with logging in?
John: No. My one seems to be working fine.
Jeremy: Strange. My one keeps on saying - no such user.
John: Are you sure you're typing in the right login and password?
Jeremy: Yeah, I checked it's definitely the right user name and password.
John: I can't help you much on that one then. Maybe ring tech support and see what they say.
Jeremy: Oh joy! Here comes 45min of hanging on the phone to speak to some numpty that probably won't solve the problem.
John: Yeah, but what else can you do?
Jeremy: True! I guess I better brace myself and ring the helpdesk. I've think they've grown to hate me with all the problems with that account. 

Summary: 
Jeremy can't log into his work account today. John recommended him to call the helpdesk.