How to say what page comes up after hitting submit on the contact form?

When I hit submit (for a test) it takes me to another website.

I made a test submission on your page but it did not take me to another website. I can't seem to be able to replicate your issue. The form simply showed the Thank You page after submission.

Do you want to change this behavior so that when a user submits the form they will be taken to another website? If yes, then you can do so by following "Redirect to an external link" section under this guide: Setting Up the Thank You Page. If you need further assistance, please let us know.

Thank you for checking this. I found the problem right after I submitted
this query, but I couldn't find a way to delete it, or to add a note to my
question.
Sheila Rich
"This is the day that the Lord has made; let us rejoice and be glad in it."
...

Hello Sheila,

On behalf of my colleague, you are welcome. I am glad to know that you were able to resolve this issue yourself. 

Do get back to us if you have any questions.

Thank you!