Laptop purchase

We bought a Laptop from Makro for my son's schooling (Proline range) and we till today have difficulty returning this laptop as my son is still doing online so in order for us to return this thing means he will miss out on school. The problem is that this PC is faulty the Microphone does not work after one software update. if the Sales person did his job he could have advised us to rather spend an extra 1500 and buy better quality. now I have to wait until the school closes before I can return this **** I was sold. when I went to the store to enquire they advised me that due to the urgency I need to take it directly to Pinnacle for them to fix their mess or give me a refund voucher (all we ever deal with is bad service) me as the client to go there directly is terrible.