Suitcase damaged and change of seats without my consent

1.It was my first time using Lift,took it in Johannesburg going to Cape Town 07/05/2021,when I took my suitcase I found it cracked and the cracked pieces practically out,I then went to the lift help desk and told them about my case they took pictures of my case then said they will go upstairs to take pictures of the suitcases they have (they practically replace yours with a second hand suitcase)i wasnt pleased with what they said I left. 2.Going back to Johannesburg from Cape Town 10/05/2021 i checked in online then collected my ticket when I got to the airport only to realize the seat I was given online and the one on my ticket was totally different and my case on that damaged place got more affected!!!!So am not happy at all with the airline and feel I will never use it again nor recommend it to anyone!!!!I am infact very furious and need my suitcase replaced....I will right review about the airline on all social platforms I can think of till am helped.