Pathetic service and ***********, unprofessional staff

Please assist me with LG MMR Electronics situated in 64A PICKERING STREET,NEWTON PARK PORT ELIZABETH NEWTON PARK , PORT ELIZABETH. We took our flatscreen LG Tv that had a damaged/broken screen to LG in Newton park to fix about two weeks ago and maybe I should mention that before we took it to them we phoned them and asked for a quotation (which was given to us as R2500 – R3000) and when we got there Wayne (who I assume is the manager now sang a different tune and told us that we were not supposed to be given a quote over the phone and that it was just an estimate (forgetting that it was his and his employee’s duty not to give us such information if they were not sure) and he had the nerve to blame it all on us saying that he can give us a figure once they have looked at the TV and whatever damage they found. Fine, we ended up leaving the TV and we all agreed that they will just check whether there was any other damage other than the crack on the screen. After I tried to follow up with him on numerous occasions, he eventually told me on Friday last week (1 Dec 2017) that there was nothing else wrong with the TV and they will fix the screen for R 3000. The TV will be fixed by Tuesday. I had to phone him once again to follow up because they do not even bother phoning to let you know what is happening. Yesterday, he told me that he would phone me before the end of the day but guess what, nothing. This morning I phoned him, he said we can come and collect it this afternoon after 3pm. At 15h22 this afternoon, I received a call from their office (same lady who quoted us R3000 before) , asked by Wayne to phone and tell us that when the TV fell it was on and so there was a board that got damaged, they managed to fix the screen but now they are trying to get a second hand board in order to fix the TV. All in all the TV is not fixed and judging by all this He **** when he said we could fetch the TV this afternoon. I have reason to believe that he is used to treating customers like this or he is just a chance taker all in the name of LG. He phoned me on Saturday at 11h55, when I saw the missed call at about 12h05, no one answered the phone and the agreement was that he was going to find another board for us but this morning he is telling me that he could not find one and that is it. I cannot accept that he expects us to pay for a new board when he was the one who said nothing else was damaged. if he found nothing else wrong before, when and how did this "board" become an issue?? He has a stinking attitude to top it all, when all he has shown all this time is incompetence. Please I urgently need assistance.