Poor service

Absa Teljoy recently took over all Maxicare customers. With Maxicare never had a problem. I logged a complain on the 13 June 2019 after 3 days the technician had come and taken the tv and after they checked the tv they stated it was unrepairable and they need to replace the tv. after numerous calls a new tv was delivered on Monday 22 July 2019, but we had a 43 inch lg tv and they have replaced it with a 40 inch hi-sense. I have not accepted the tv and sent it back, due to the tv being small. I require the same size tv its doesn't matter if it is a hi-sense. I have been on the phone from Monday but being pushed around from one person to another and no body can assist me. When I ask to speak to a Manager they are always not available. I hope I get some feedback soon. We are pensioners and we have to sit with this problem and going around in circles.