Unreliable Isuzu KB300

<p>I bought my bakkie in June 2016. Unfortunately something is draining the battery to leave it flat within 48 hours. The vehicle has already been back 5 times to Le Roux motors where I bought it, where they only upgraded the radio software every time. On the fifth occasion they also replaced the battery but I still have the same problem. The problem has also been reported to GM South Africa who did not even bother to reply to my e-mail. This R500 000 vehicle is completely unreliable and has left me stranded on numerous occasions.</p>