Bad service

I took my 55" Samsung Curve TV to Cells R Us AllCell for repairs in December last yr (2022), since half of the screen turned dark and I payed R1800 for labour.. I got it back day before New Years day (31st Dec 2022). Within 2 days i noticed the screen was turning dark again, so I took it back there on the 5th of January. It was there for almost a month, then I went to check how far they were with it. All to find out they accidentally broke my TV but they didn't even contact me to tell me that.. They've been saying they can't find the new screen (LCD) from their suppliers.. And that they will give me a call. Today again I went there with the info that I got from Samsung (quotation of the screen) the boss whom i usually speak with when i go there couldn't even come out to hear what I was gonna say or even suggest , he gave one of the employees a message to tell me that he will give me a call - AGAIN... I don't know what to do anymore with this matter. It's really frustrating. Their contact numbers: *** / ***/ ***