MRP laptop purchase

Good day

I bought a Lenovo laptop from MRP zevenwacht branch, within the first 2 weeks the laptop gave problems and I took it in to have it checked out, the technician said it was a software issue and sorted it out, not long after the laptop was giving problems again, it did not want to switch on at all, I took the laptop on almost 2 months ago and am still waiting for feedback, I inquired this week again but was told they can't get through to the technicians to find out what the problem is. When I asked to be given a different laptop or a refund I was denied, I am really disappointed with the service because I bought the laptop for my mother for work purposes and it's been months that she's waiting to get it back.