My Norton Account Shows 360 Uninstalling !!

Hi Guys help please , I have had a Norton account for many years and never had a problem. Today I have tried to install a different version of 360 and tried to delete the old version through the PC which was not effective, so went into my account page to remove the old version , which was Ok to start with but 8 hours later it is still showing it as "Uninstalling" and will not let me do anything as all the buttons are unusable. Any ideas ??? Thanks