deleted contacts

Hi, I mistakenly deleted all my contacts from my General Contacts list! I was attempting to delete only one contact ... I had searched the name I wanted to delete and the page showed only that one contact. When I tried to delete it, it deleted all contacts in the General List without warning! Now, I tried to recover them from going to the last campaign where I used that list and all but one name are crossed out! I cannot restore the list. Can you please help me. This is very frustrating. 

Thank you! 

Nita Little Nelson