Whatever I submit on my form I get ‘thankyou’

I have really looked at every post here to try and fix this problem without having to post, then I thought nah! I’ll ask the pros……my problem is that I have redone the form and when I enter the details (any details) in the boxes it generates the thankyou page when I suspect it should be generating the error page. Thank you Sarah #14588 zebedee.edu.hk/contact.php

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Whatever I submit on my form I get ‘thankyou’