Dishonest, Inefficient and ************ Business is Tracker

I am at my wits end with Tracker. I purchased a new vehicle and got Tracker to fit a new tracker into this car. They did the installation and it was not working. 3 weeks later they came and replaced the unit as the original unit they fitted was faulty.

1) I was charged a subscription for the 3 weeks that the Tracker did not work. I was assured this would be credited yet I am still waiting. 2) When they were coming to repair (replace) the faulty unit they asked me to agree to a R595 call out charge. I did not agree to this charge as the unit had not worked since installation and was within the warranty period,

If this is not resolved and I am not refunded the call out fee as well as the period of the subscription that I was charged when the unit did not work I will be cancelling my contract as well as taking legal action against this ************, dishonest and inefficient company.