Extremely bad Warranty Service from Lenovo

I purchased 2 Lenovo Ideapad 330 Laptops from Evetech Centurion on 3 September 2019. This laptop was purchased with a 3 Year Fetch & Repair Lenovo Warranty. The laptop stopped working on Sunday 16 August after a couple of Blue Screen Errors and Repair's run by the Windows operating system, the laptop didn't want to switch on. We suspected that the motherboard is faulty and communicated this to Evetech. Initially, Evetech referred us to two other warranty centers before they realized that they have advised us of the incorrect Warranty Centers after which they sent the laptop to First Technology Group in KZN's support center. Even though the fault was logged that we suspected the motherboard was faulty, the center assessed the unit within a week and notified us that there was a loose wire on the motherboard and that they fixed this and then returned the unit to us. The laptop then continued to give Blue Screen Errors and Repair's run by the Windows operating system. The laptop was returned to Evetech who in turn did numerous tests on the hard drives and then advised the First Technology Group that the problem still occurred. Never did First Technology Group admit that there could be a fault with the motherboard. They have now assessed the machine for a total period of 2 months (since the beginning of October) and no resolution. We have insisted on the unit to be replaced, but the team at First Technology Group is dragging and dragging. It is absolutely unacceptable that this unit which was only 11 months old experienced this issue and that it's almost 3 months since the laptop stopped working and I still have no indication of when I will receive a new or completely repaired unit back from Lenovo / First Technology Group.