Cartack. Bad Customer Service

We have a Cartrack unit fitted to one of our cars for the past 6/7 years, around December 2018 the unit went faulty, and started to drain the car's battery. We called Cartrack with what I thought was a simple request, its an old unit, fix or replace. BUT..........Its out of warrantee, we don't make house calls, you have to cancel the contract, it's R600 to remove or replace but we don't sell that unit anymore............ but if its faulty just replace it ???? but there's still a charge. Each time we get a call to tell me my car battery is flat, we request that a manager calls me to sort out this problem, that's be going on for 6 months. We called again today and after being put through to 4/5 departments, at last today we get a lovely lady how explains everything to us, very nicely, but the damage of bad customer service has been done. so I will drive to Rosebank tomorrow, where they will remove the faulty unit. I will then drive to Beame, another Car security Tracking company and get one of their new units fitted. Interesting in this economic time, where you spend money on attracting new customers, where money is tight, you can afford to lose a loyal customer, who has never missed a payment and pays on time. Congratulations.