Bad Cell Repair

On the end of May I gave my Daugter's Samsung A30S in for a screen repair at Zidan Zan Trading in Pretoria Gardens. Well it went well but after a month and half the screen becam loose at the top 2 days ago. Yesterday the screen went dead. At 6pm tonight I showed the technitian what it is. No look here and showed that he think is water damage. No water was in it 2 days ago. I asked if it pulling loose was normal all he say the screen has no warranty. I asked him why it will come loose but he did not look at it. Only say he cant help. I am not satisfied with this.