Bad Service for Radiator Refund at Autoaircon Head Office for Edenvale Branch

I bought a Radiator for my Suzuki SX4 from Autoaircon (Edenvale) in 07 June 2018 and on the 27 October 2018 I returned it back to the branch because it was leaking. I was told that it will be sent to the Head Office to check the problem since it is still under warranty, and after waiting for days for the findings I received a new radiator on 12 November 2019 with NO REPORT as to what was the problem with the leaking radiator.

Again this year 2 April 2019 I experienced the same problem radiator leaking and this time because I am fed up with all these returns and inconveniences and costs, I returned it back and ask for a refund so that I can buy a radiator elsewhere. Suddenly on the 3 April 2019 I receive a report that it is not their fault that the radiator is leaking it is actually my car's fault or my fault basically.

If the report is so quick to have when you want a refund why didn't I receive the report for the radiator I returned last year because all I got was a new radiator with just an explanation that it is not my fault the Head office has checked it and replaced it with a new radiator and that was the end of the story, if they have such a detailed report even if they replace an item I am entitled to know the reasons for leakages from the beginning this is not the first time their radiators leak.