Horrible Customer experience

This is definitely one of the most horrible experience with MTN, I bought not 1 but rather 2 Samsung S26 Ultra and within the 1st week the 1 phone started having problems with the flash staying on and over heating. I reported this to MTN and did as they asked me to after the problem came back I went to the store and once again the phone was factory resetted, but that did not take the problem away so it needed to go for an assessment to their assessment centre, which I understood. Its been 3 weeks since that phone is not with me but I am required to pay for it. Samsung isn't cared and MTN blames Samsung yet one of their consultants while doing a follow up called did mention that MTN needs to sort the problem out as the product is purchased from them. I did not have the phone for even a month and I started having this problem. I got to call or message for updates otherwise I wont get any feedback, and when I do get an update it's always they waiting for Samsung. I definitely regret purchasing anything from MTN and from my side they definitely the worst service provider to deal with, they have 0 compassion for customers.