Samsung Customer Care

Bought a new Samsung A05 in August 2025. Phone comes with a 2year warranty. Phone started giving problems and I then took it to the Samsung shop in Sandton City. They ran some diagnostics which took about 20 min and then informed me that I need to take it to the Samsung Customer center in The Wedge Shopping center in Morning side. Took it in with all my documents required and was told they need to keep the phone for 24hrs to check and if there is a hardware or software problem if its a hardware problem they will have to order the spares. Why can the dealer ship take 20min to establish the problem and the customer care center needs 24hrs and possibly longer if they need to order spares? What happens to all my data on my phone? They tell me I can put my phone in Maintenance mode and I will not loose anything - I don't believe that, technicians can override anything and have access to my phone - even worse, I get my phone back and they say sorry but we had to replace this or that on the phone which resulted in u losing all the information on your phone. I would then rather have my phone, not even a year old to be replaced with a new phone and all my data be transferred from the faulty phone to the new phone. For the company that sells the most mobile phones globally, this is very poor service!! !