Wont buy Isuzu again

Bought a KB350 Club cab from Reeds N1 city last year as a demo with 6000kms. The problems have been endless, including the back window wasn't installed properly and leaked in to the cab. The gearbox had to be removed and lubricated properly after taking the vehicle back several times to be told everything was fine. The brakes make a noise which they cannot fix and now the Bluetooth radio does not work properly. People cannot hear me when I'm driving, and I was without a radio for 3 weeks while they sent it to JHB. They then installed a new radio and same problem. I will never buy Isuzu again, and they wont really take liability for what is essentially a faulty product that has been supp**** in the form of this vehicle.