Shiraz Auto or Netstar to be blamed

My vehicle was fitted with a tracking unit last year June since that i have had endless issues with it. The unit was fitted at Shiraz Delta in Lenasia, in December while scrolling on the netstar app i realised that the location of my vehicle was incorrect. So 2 days ago i took my car back to have the unit replaced and now my location shows that my car is in the Atlantic Ocean. When i went to collect my car as per normal no one was present rather than a used car salesman tried to assist me but had no knowledge about the app. Sorry to say but the customer service offered at this branch is up to ****, either the tracking department doesnt answer there phones or no one is present to assist you. This morning i received a call from Shiraz Delta claiming that my car was in Ext 1 however it was parked in my garage in Ext3 , the caller from Shiraz Delta said that they will call me back shortly and let me know what the issue is 12 hrs later im still waiting . Is this the kind of after care service that Netstar provides or is it just the dont care attitude from the Shiraz fitment center. Im very annoyed as on my other vehicles i have Matrix and trust me i have never had such **** service ever. What happens if my car gets ****** who will be responsible for recovery Shiraz Delta for providing **** service or Netstar not having sufficient technology upgrades ?