LENOVO BAD EXPERIENCE AND SERVICE FROM MAKRO

I bought a Lenovo laptop for my matric daughter from Makro in June last year for assignments. According to the sales person that was the best buy for our needs and budget. We hardly used the laptop as it is very very slow so we bought het a new one this year. I decided to use the laptop for home emails, but it just went blank. I booked it in at Makro and after a month I got a message saying I can pick it up again. Nobody phoned me to inform me what the problem with the computer was. When I arrived at Makro they gave me the computer with a slip to sign but nowhere was a report that indicate what work was done on the computer. After I complained they phone Lenovo and came back with a small piece of paper written on motherboard. I tried to log into the computer, but it said I need to change the pin and there was no internet available at shop so I had to test it at home. I told them that I stay 86km away and cannot drive up and down if something is not right. So today I started the computer. It prompt me again to change pin I logged into the computer with my email address and then the screen turned black again and then it is stuck again. So now I need to go all the way back and wait another month? so not happy with the service I got. Not even a proof of extended warranty nothing. I would think they need to replace the computer now I must struggle and waist petrol driving up and down for a poor computer they made me buy