Worst experience from Huawei

My Huawei handset just stopped working at the beginning of December because of the soft ware that needed upgrade, despite numerous engagements with Huawei they failed to assist me in their walk in store in Menlyn mall. I was informed they do have that software needed, I escalated the matter to Huawei head office hoping for speedily assistance, However I was told to take handset to a store on the 18th December 2019 with a promise to have device sorted within 7-14 days. That turn around date was not honoured. I informed Huawei of the failure to deliver as promised. Eventually I received the device on the 13th January 2020 from Vodacom store. Surprisingly the device has now been returned with a new malfunction, The device uses dual sim cards but now it has been returned barred from using other NETWORKS.I have been inconvenienced and appalled by such poor service in a way that I hate everything this brand stand for due to their complete incompetency to give excellent service