Got two non-working laptops from homechoice and bad service.

Good evening. Around January 2021 I bought a laptop at homechoice and I had to return it because it was giving me problems, I didn't get help because I was told I don't have an insurance for the laptop. After months of fighting to get help (calling, emailing and going to their stores), they sent me an email and told me they will replace my laptop. I got that laptop after 7 months but still it has problems, it doesn't have an operating system and I decided to pay an IT specificalist because I was scared of taking it Back, I didn't want to wait for 7 months again. The guy I got told me the laptop has software problems, i have to return it to homechoice again. The hurting part, I bought this laptop because I need it but I have been paying for something I have never used. I don't even know how to deal with this now, because iam wondering if I return it again, will they help me. I sent them an email but to be honest, am emotionally exhausted. I've never received such bad treatment from a store and I regret the day i bought that laptop from them. I even wonder if they replaced the laptop and if they did, how can they send a laptop that still has problems. What am I suppose to do with it?i should just keep on paying them but paying for a device I have NEVER Used, NEVER. I just feel like am losing my money for nothing.