How can I contact the people who filled out my form

We did not put contact info on our original form. Is there anyway to contact the purple who filled out our form.

If you did not request any type of contact info (email, name, address, phone...), that I am afraid that it is not possible to contact the users who submitted your form. 

The IP of your users was captured. Maybe you can use it to find out who submitted the form.

How to Find the IP Addresses of Form Respondents