Worst service ever received

I'm writing this review on behalf of my dad. We engaged with tracker about 3years ago as it have been a requirement for pay as you drive with Hollard insurance. After a year the unit started to drain the battery eventually acid had built up and damage the battery, battery bracket and the battery section which was all metal. All these damages had total to R7000. Eventually when we had contacted the company we where told the battery had to be changed yearly which was not addressed or statement on fitment. It was told the battery had a 20year life span. My dad later canceled the Hollard insurance and tracker is still debiting his account after a few reversal. They not send message of demands and state my dad will be handed over. To date this isn't settled and it's been a year since cancelation on the policy and tracker.