Submit button starts loop

I have searched the forum and cannot info regrading the generation of a loop after submit pressed.

Submit does redirect to another page that includes ticket confirmation such as user and email but it forces users to fill in another textbox again and resubmit — this redirects/or lops again : it shows info for both previous requests (confirmations) and again forces user to input text into text box and press submit — there is no resolution.

Your help will be greatly appreciated!!