No after sales service/selling incorrect products after explicit explanation of needs.

They sell you a laptop with software that is incompatible with a Smartboard when it was explicitly stated by me that it is all I need it for. I am a lecturer, have a desk top at home and only need the laptop at university. We spent weeks trying to connect with Hisense who eventually, after liaising with their international office confirmed that the machine is incompatible. Incredible connection accepted the return only to phone me and say that it is not a hardware issue so they cannot accept it and I need to come and fetch the laptop. I have now spent thousands to own a redundant laptop! Terrible service. I will not leave it at this.