Born loser..again

I was going down to B1 from level 4 using the office lift.

I got in, pressed B1 and waited for the lift door to close. It closed, then opened again, and I was still at level 4.

I pressed the close door button once more. Again, it closed, then opened, and I was still at level 4.

I pressed the close door button again. And again, it closed, then opened, and I was still at level 4.

I got out of the lift and cursed $^%^$#%$^&%$.

It closed. And went straight down to B1.