TRACKER FAULTY UNITS

On January 2018 we purchased 10 new vehicles which we installed Tracker located and retrieve. Unfortunalty from the start the devices gave errors and incorrect notifications and wrong locations.

After several complaints from the start and with emails sent to the contact centre they suddenly whant to charge us R500 per vehicle call out fees??????? This is brand new equipment and therefore I dont understand why we should pay callout fee but at the end the problem is still ongoing with incorrect locations and errors with no responce