Unable to uninstall Sophos AV

There was a company client of Sophos running on my laptop. Lately, it started to block several websites including a wordpress website I designed! I've since been living in another country and thought maybe they made some change to their policies and decided to uninstall it and find something else. I used "uninstall" option along with removing desktop client. Nothing was working. Some items would not empty in trash saying it was running and cannot be removed. Such as History.db, History.db-shm, History.db-wal and quarantine.db, etc. I also went into ~Library and deleted sophos files and also Active directory, force quit on all sophos entries. Then I did a soft restart, deleted those files that were not deleting (it worked there) then restarted. When I came back, it is still blocking websites such as autobiographyoftheavatar.org. I already installed Avast free software, which would not install before saying Sophos was still running, but then now it worked. Please help me remove this Sophos! Thanks