bad product from samsung

i purchased a dishwaser from hirsch's on the 06/01/18. only to have the machine breakdown the following year on 04/06/2019. i called samsung to send a tech (inyathi) to fix it. he comes and says that the machine is fine. he did not exhaust all option of what could have been the problem and changes the water pipe instead of changing the mother board which was faulty (but after a year it says alot about samsung's product). again this year the machine gives me the same problem. a tech from inyathi comes checks it and again says that there is no problem, now the machine is out of warranty, charges me a call out fee and leaves. i then call again after having the machine give me problem throughout the lockdown on the 15 May 2020 (i was told that someone from samsung and inyati would call me. NO CALL FROM BOTH COMPANIES). luckly this time i took a video and so he unerstood the fault. its now a week and half, no call from inyathi or samsung as promised. i am still waiting for the quotation as to how much they are going to charge me. today 28/05/2020 i called again. spoke to Gloria at samsung could not help asked to get me a supervisor it takes her over 9 mins comes back and says that sorry there is no one she can find, like really. feed up with samsung and their techs.