Engen SA hacking my Google account to cover *****

Please assist! Engen SA has hacked my Gmail account as I have extensive documentation proving ***** they committed with various companies like Tokheim, LAS pty Ltd. SANAS Prowalco, Petro Monitor etc. They have taken control of it and they are now made themselves my IT Administrator on my PERSONAL Gmail account. I've tried in vain to get assistance from Google. I have extensive documentations proving collusion and State Capture committed by their ER manager who works between Transnet and Engen SA!