Had bit of nightmare, couldn't get rear brake to work and neither could my local bike shop so had to do an exchange on another one.
This bike seems to work fine.
I would however recommend one of these for anyone looking for a cheap bike.
Thanks for the idea but the front brake always works better on disc brakes and wanted to improve rear brake
The cable rubber sleeves are in a position where the cable does rub.
If you look at the pic you'll see that's where the cable is in contact with the frame.