I rented a VW Golf and couldn't take the handbrake off because it didn't have a lever.
Just drive off, it's automatic.
I rented a Vauxhall that I couldn't turn the indicators off - it was ether left on or right on with no central off position.
I doubt that. Chances are you found the "flick" operation which returns to centre but leaves the lights flashing for three goes. If you try & cancel by flicking the other way you get three flashes of that side instead, so it looks like there's no 'off'. It needs a good push to either side for "fully on", otherwise just leave it alone & it stops after the three. Damned stupid design, I agree, and a PITA.