Well, took it to another garage and it seems to be sorted, it needed another half turn of the hub nut which was loose enough to allow a bit of wobble...
I wanted to mention this, a wobble in the hub (or in the brake disks) can cause a spongy pedal feel while driving. (reason being that as the disk rotates it pushes the piston back like another 0.5-1mm... when you then press the pedal the piston in the caliper needs to travel the extra distance =>spongy /soft brakes)
But not while stationary with engine ON.
after 1 pedal.. the brake should be pretty firm and not feel spongy after.