Hisense after sales bad service

I am writing to express my dissatisfaction with the after-sales service provided by Hisense South Africa for my refrigerator, model number 1B***7. Despite reporting the issue of a faulty LCD screen, which started on May 23, a job card was created *** the problem persists due to repeated cancellations of service requests. A technician visit was scheduled on Sunday, 8, and although the technician recommended replacing the screen, the request was canceled again. Given that the appliance is still under warranty, having been purchased on June 18, 2014, I expect a prompt resolution to this issue. Why should customers invest in Hisense products if issues cannot be resolved efficiently? Hisense South Africa Hellopeter.com @hisense