If you go here: https://outlook.live.com/owa/#path=/people
Do you see Manage --> restore deleted contacts
Anything in the trash folder?
I'm going through all options with you, there should be a spot to recover deleted contacts.
Do you have anything that looks like the attached picture?
Can we do a remote session? If so go here to connect me: http://www.justanswer.com/remotedesktop/join.aspx?Session=7a993e4f-9a5d-40c6-b7ac-b1c63d917ead