Bad Service from House & Home and Hisense

Our tv was defective and we reported it to the Blue Route Mall House & Home store on 3/12/21. The tv is still under warranty and we purchased an extended warranty as well however when the Hisense technician came to our house he said he can't take the tv to be fixed due to the warranty being void for a reason that is not on any of the paper work for the warranty. He also told us that the issue with our tv is a known issue and the tv has since been discontinued however he knows what part needs to be replaced and he can fix it for R1500. We said we will get back to him on that and he left without the tv. We then called the store to find out why they want to charge us to fix the tv if it is still under warranty. They told us that we were ***** and that the technician never said they will fix it for R1500. The technician also closed the incident, **** and said he repaired it which he did not! The same faulty part is still in the tv, nothing was replaced. We took time off work to go back to the store and they promised us they will come back to us with more information but we are still waiting on feedback. We then called again. The manufacturer, Hisense called us to make an appointment for 29/12/21 to come for the tv, he never came. We then arranged an appointment for another day, same thing, they did not show up. We have been dealing with the technician named Leeroy from Hisense. The experience with him has been terrible. They have **** to us and made empty promises. Their customer service is putrid. It's been more than a month now and our issue has still not been resolved.