Dobby/Philip ?
I see several different people's stories have been compressed into one.
The call forwarding prank was mine.
The manager involved was so ineffective, I used to refer to him as "Captain Kirk's cardboard cut-out", or "Cardboard cut-out" for short.
Why "Captain Kirk" ? Well, he had this way of being very over energetic in meetings with other managers, making out he carried the weight of the whole company on his shoulders - while doing eff all on the topic once they had all left.
At the end of my tenure (I got fired ); after another diatribe from a factory manager over a constantly failing set of safety cords - I lost it, and explained in great detail that the manager and foreman had botched the installation by not only buying and fitting the wrong spec equipment, but by bodging it's installation as well (because it was cheaper), and then went on to point out that it could be fixed for pennies and 30 minutes work, but that the Manager and his cronies didnt want to admit they got it wrong.
This fault had probably cost the company millions in productivity by this point, as the safety cord failed at least once per day per line, and because we were based at a different site, it usually took us an hour to get there and reset it each time.
After the fix - which I didnt do, as they were busy firing me, the safety cords never failed again.
THE FINER DETAILS
The safety cord run was 50 meters, but the 50m kit was 3x the price of the 25m kit, so the idiots ordered 2x 25m kits for each line, and just tied the ends together, pocketing the extra cash.
The problem was, these safety cut-outs were spring-loaded, so the springs were constantly pulling against each other, and the slightest touch would set them off, requiring 2 guys and some patience to get them reset and back in balance.
MY SOLUTION
Weld/bolt an upright at the mid-point, fit a ring bolt and tie the two runs to the bolt, so each 25m run was independent, and not pulling against the other end.
It took 4 guys 4 hours one Saturday morning to fix all the lines; and the fact they took 4 hours suggests they were slacking off for half of the time.