Tired off no service and the way some of the people talk you to you as a customer

I have purchased a laptop on the rent to own at Teljoy. Since say one I have been struggling with them. 1, I struggling to deliver my goods. 2, then I contac them because my debit order did not go off and the lady told me that no mam your debit order will only go off end off March and I also asked her what the amount will be. She never told me that it will be more then R1200. And there is telephone recordings so still now I am waiting for feedback and still nothing. They told me they will go listen to them. And aging no service. 3. I am struggling to work with the laptop. I told them that I went to ask a electronic company about my problem with the laptop re installing self. And that I struggle to get my wifi on. The day before yesterday my laptop restarted it self aging and deleted everything on it. Even all my photos and videos. I told them that this make and model off laptop is a problem in manufacturing. Because all other electronics plays have the sam problem with customers coming back. I told them i am looking for a other laptop and not the same one. And they say that i have to pay R1000 for switching to a different laptop. But first someone else told me it is R500 and now the amount changed again. i do not even have the laptop that long so it can show that it is a manufacturingfault.I am so tired of struggling to get service from them.