Who is 'they'? That's not something to discuss here, but this is no time to be vague. Consider what an outside investigator would want to know. When did this start, who said that when, why is your office not up to standard, have you been given any warnings or are you on a performance management plan. Write it all down. Go home and email it to yourself from your own email address (that is the absolute best way to keep records, you never lose them ,they are dated and you can access them from anywhere)