killing a job

hi pleople!

i've got a job running submitted by a pl/sql job. the problem is that I want to kill it
but I don't know how I can do it because whith dbms_job.remove it's not possible because
it's running at the moment. Another problem is that the session doesn't exists I think
I remove it. How can I kill it???

job        total_time    what
2202      11285         cruceCobros.cruceSoporteCobros(4332, 6422, 3);