Maybe you should search this tread a bit next time. This question and kindlike already passed numerous times. A mistake that newbies often make. But people don't like to answer the same thing over and over again.
If it does not work with a .htaccess file, try it with a php.ini file with the correct settings in your public_html directory.
If that does not work, you have to ask your hoster and it seems your hoster does not want to cooperate, in that case it's end of story, or change hosting company ofcourse.