Unresolved blue tooth issues

Just a heads up to potential Haval buyers. Our Haval H6 Hybrid has had poor Bluetooth call quality since the day it was purchased. People can barely hear the driver on hands-free calls. The issue was actively reported to Haval Bruma 9 months ago and despite multiple attempts — Bluetooth upgrade, hard reset, workshop inspections — it has STILL not been resolved. I rely on hands-free calling for work and have spent the last 9 months chasing this issue. At one point I even bought a Bluetooth extender myself out of desperation, only for the workshop to incorrectly blame that for the fault. Removed it. Used a wired connection. Problem still there. A month ago I again informed Haval Bruma that the issue remained unresolved. No feedback. I escalated to GWM SA customer care this week and received completely unsatisfactory feedback from head office. What is most concerning is that I personally another Haval owner with a similar complaint. Nice vehicle, but the after-sales support and handling of this issue have been incredibly disappointing.