Anomalies happening in Outlook

There are a couple of things happening.  When creating contacts in the All Public Folders the File As name shows the last name first, first name last but when I get to the Display as the name auto populates with first then last name followed by a hyphen and the company name or it displays correctly but when you go to select the name in the To box on a new email the name appears different, i.e. Jane Doe - ABC Supplies. Also, when replying to emails the lines want to double space but I have gone into the formatting options and these show single line. I am in a network environment and my system is the only one being affected.