the jetpack plugin mixed up the site what to do?

I installed the Jetpack for appointment it mixed up the whole website & won’t let me to do anything, I don’t know how to remove it?

here is the error that I got

Fatal error: Cannot redeclare grunion_media_button() (previously declared in /home/content/m/a/r/marlikftp2257/html/meshoeboutique/wp-content/plugins/jetpack/modules/contact-form/admin.php:14) in /home/content/m/a/r/marlikftp2257/html/meshoeboutique/wp-content/themes/care/functions/contact-form/grunion-contact-form.php on line 682