Bad after sale service

Bought a UPS on the Vodabucks app in July. I only realised when loadshedding started that the UPS was not working. I then proceeded to calling the Vodabucks department for assistance. That was in Aug/Sep. To this day I still have not received any feedback. I am told a technician will be sent to my place. All most 2 months later, Vodabucks dept is still waiting for feedback from "back office" and no one is willing to assist.