Poor customer service

I wrote an email to Netstar Thursday last week. Within space of 4 months my car had to be jump-started 3 times. I took the car to a well-known battery centre. Both times I was told the car battery is working 100% and suggested I contact Netstar as it might be system battery. <br> <br> This was emailed as I mentioned last Thursday. The same day I got a response saying the fitment centre will contact me to replace the system. After a week - no response or arrangement with myself to take the car to their centre. It is a concern to me as I might have the same problem any day with my car not wanting to start. The lack of feedback or response is unacceptable. I pay monthly for this system!