Cannot Uninstall Netbackup Client 7.5

i try to uninstall Netbackup Client 7.5 but after i press remove/uninstall button in add or remove program no process was started. i've try to do it by log in as local administrator but no luck. I try also by running netbackup client installation hoping that remove, repair option appear but its not. I just want to remove it by another way beside manual delete from directory and registry.

Best regards,

Iqbal