JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Unfortunately, we don't have a phone support. The best way to reach us is through this Support Forum.
My understanding is that you don't want to receive duplicate entries or duplicate answers?
You can use our feature called Unique Submission. It will block multiple submissions from one computer or one IP address by setting it on "Loose Check" or "Strict Check". The Loose Check controls the cookie while the Strict Check controls the IP address. Please refer to this guide: https://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form
We also have a Unique Question feature. You can use this to prevent submitting duplicate answers. Please check this guide: https://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question.
If this is not what you need, let us know so that we can further help you. Thank you.