In the header of the template file in question (probably header.php in the theme directory), try adding:
<?php nocache_headers(); ?>
This doesn’t sound like it is a problem with the cache plugins, which basically control caching on the server, it is more likely that this is caching on the client. This will tell the browser not to store a copy of the page.
Reference: http://codex.wordpress.org/Function_Reference/nocache_headers
A quick and nasty solution is to add this as a child of the HTML head element too:
<meta http-equiv="cache-control" content="no-cache" />
Hope that’s what you’re looking for!