Netstar complaint

I recently purchased a vehicle through we buy cars. I was looking for a tracking device for my vehicle. Netstar staff was quick to phone me even still at we buy cars to sell me a product. I accepted where by a fitment booking was made. The technician was late by 3 hours for scheduled fitment I arranged for the morning off as the fitment was booked for between 8 and 10 am regardless I only returned to work after 1 pm due to the late arrival of the technician, The device was installed on 01 Sept 2022. Currently on the system my vehicle seems to be 780km from where it actually is standing. I contacted Netstar to inform them on numerous occasions since then, that the device was not working as stated and that the vehicle was not in the correct location when viewed on the app. I have screen shots to prove same. I have tried calling them this morning and there is no answer from the tech support department. I have tried more than four times, no results. I am very unimpressed with the current situation and can't see that this company is the right choice if I have encountered so much problems regarding the product and aftersales support within the first week. I will be reporting it to the consumer council to warn other future customers so that they don't encounter similar problems. I also advise we buy cars to rethink there business with Netstar as this can harm their reputation. I should have done some research as there is a lot of the same complaints on hellopeter.