Taking an animate picture out of necessity

I heard that photos of animate objects are prohibited. Now I am preparing for a lawsuit against my landlord to get my rights back and the court needs evidence. I need a cleaning receipt to back my words but the receipt contains a human animate picture. This receipt is from a large cleaning company and can only be accessed online and I must take a screenshot (like photo). I heard under necessity haram things become permissible and to defend property is a necessity? Can I take the photo? If not I fear that my argument could be very weak and more injustice can be done to me as a tenant.