Bad client service/product

I purchased a laptop in September 2020 via a Vodacom contract. This was done telephonically and couriered to me. The brand name of this laptop/model was a Mecer Guru laptop. In November 2020, the laptop suddenly stopped working. I contacted Vodacom and they informed me to contact Platinum Warranty. Platinum Warranty then collected the laptop via courier. They informed me that the laptop or brand "Mecer Guru" had no external damages. They then covered the laptop with no cost to me. The new laptop was a new Mecer Guru laptop. Then in June 2021, the new Mecer Guru laptop stopped working as well. I then contacted Platinum Warranty, who then came to collect the faulty laptop via courier. This was during June 2021. Then they provided me with feedback stating, that on the replacement unit, there are external damages, which the warranty does not cover. And if I want a repaired laptop, I would be required to pay a repair fee of R5000.00 rand. I contacted Vodacom many times reporting this incident and feedback from Platinum Warranty. To no avail and even their call center continuously gave me reference numbers, with no one assisting me. I am still continuously paying my Vodacom contract which includes a non-existing laptop due to Platinum Warranty excuse of not dealing with this common issue with the types of laptop brands Mecer that they give to sell to their clients. Mecer laptops or products are not trustworthy and Platinum Warranty continuously provides me or other clients with this same brand of laptop. No one is assisting me in resolving this matter, unlike the previous incident in which I was assisted immediately. Vodacom nor Platinum Warranty does not want to take further or correct steps in resolving this matter and I am still waiting and paying my instalment to Vodacom at the same time. I don't understand why they are now coming up with such excuses and even so, these damages that they are referring to were never coursed by me. So I need assistance urgently as this is bad client service as well as bad products being sold. I require assistance/support or client service from Mecer, Platinum Warranty or Vodacom.