Sub standard phones

I bought a Samsung A51 14 months ago from Incredible Connection at East Rand Value Centre in Boksburg. As I was using the phone yesterday my screen just went blank. I have tried soft restart, everything several times but the screen is not coming to life. How does this happen on a phone that is not even 2 years old Samsung. This is the 2nd time this is happening, amongst other issues the phone has been giving me new as it is. Is this the kind of product you are selling us now. I am unemployed, I cannot afford to put in a new screen on this phone and I can't even afford not to have a phone even for a day as I am in the job market so now will be missing calls from potential employers because of your sub standard product. I am so disappointed in your product. I changed from a Huawei phone that I used for 5 years without issues to Samsung thinking it's a better product, I regret it so much.