I have a big problem !!!

I started receiving tickets through a robot / script and I enabled the recaptcha, but it seems that the script cache was allocated in amazon and in browsers that have already accessed the page the recaptcha does not load.

In all browsers are enabled, but in what has the cache of the script does not appear, so I keep getting tickets from the robot, in 3 days we received more than 5000

I have already created another page, I disabled the server cache, among other things in the site, but nothing works because it seems to me that it is cache in the URL of the script.

HELP ME