Hello,
We Surely understand your Frustuation.
Here are few Documents to Create a Case.
Log a case on web-portal, you will receive a tool to remove SEP client.
QuickStart Guide - Create and Manage Support Cases in SymWISE
How to update a support case and upload diagnostic files with MySupport
Once, the Case has been Created, you can simply PM me, the Case Number and I will send you the Tool.