Emergency

I bought my son X90L phone at Dobsonville mall on the 12th June 2020.I was hoping is going to do well with it at school cos of this covid 19.He phone fell and got a crack,and it started not functioning very well.I took it to the store on the 3th August 2020 after calling the Head office to find out how much will it cos to fix the screen,and they said it will be R400.From that date I waited to get a call about how far they going with it..I went personally to find out and they where very incomplete. The phone was not fixed and not even aware of there where abouts.Lerato finally got hold of the repair store and they charged a different amount from the previous, which was R600..As a single self employed mother of 2,I didn't mind because my kids's education come first.I signed the consent form to give them a go ahead. At that point I was already my client base from my business because I have to share my phone with my son.I went back on the 27th November 2020,and to my shock it was still not done and now they have changed the repairs price to R900...Sadly I couldn't take that incompetencies anymore,because already my small business is going down the drain because of this company..They told me that the phone doesn't have parts and its discontinued... His do they sale something that has been discontinued all over the market.After I have trusted them with R1799 cash to buy the phone then this.Until date they haven't called me or send any SMS.My business went from 120 clients to 25 clients..Now this company has took away the little financial stability I had,worse my son's results where not pleasing at all..Am I ever going to get what is due to me?I'm not happy at all.