CNA greenacres port elizabeth Lenovo i7

I bought a Lenovo i7 at CNA greenacres, July 2019,I brought it back to the store on the 3 Feb 2020 for repairs as it was not switching on, I was told to take it to PartServe Newton Park, when I arrived there Sunai told to go back to the store because it's not under warranty, I told her CNA told me warranty is 12 months, Part Serve told me to request a serial number and a store stamp I got the serial number plus the store manager's signiture, finally PartServe booked in got the job cad, today I called them for feedback because my son needs it for college, PartServe said they are waiting for a quote I need to pay for repair because laptop was made September 2018 warranty is expired according to them, my frustration I'm going from pillar to post, my son is doing Chad he's missing on his studies. Mind you I'm still paying for the laptop.