Should be able to delete the Scheduler Job but unable to delete it ?

Hi Folks,

Steps i have followed: 

I tried to scheduled a report which ever i want to.

I scheduled it on Specific date and recurrence is for every 5 min and report has to run for 5 times.

in the output parameters I have selected PDF and XLS formats. Then i saved a job.

Once reported it executed for one time i tried to delete the job scheduler. It gone. BUT when i am refreshing the page it's still coming..

Could you please suggest is there any files which i have to modify ?

Thanks Siva.