Not happy with resolution on defective goods

I purchased a from Game Promenade, the Zedair life laptop in June 2019 its not been a full year and the laptop is giving me problems, I plug it in to charge it and the laptop and the charging plug also heats up even when using the laptop to type up a document or search the internet or watching movies, it also heats up which is not suppose to be happening, I called the promenade store and asked to speak to the manager, the lady who answered would not transfer the call, instead insisted that I tell her what the query was about, eventually I told her what the problem was and she said I should bring the laptop in and they will need to have the laptop assessed, now my gripe with this is, its within its guarantee period so why do u need to have it assessed, when I bought it there was no problem they were quick to put through a sale and take my money, now that I have a problem with their defective goods, u have to go through a whole long process, its like I am thumb sucking the problems I am explaining about what the laptop does..I am not happy with this piece of **** that was sold to me and want my money back from game but it looks like I am going to have a long battle to get this matter resolved with game but I will be taking this matter to the consumer protection board as well as the ombudsman should I not get a satisfactory resolution to this matter...I would like a person in higher authority from Game head office to look into this issue immediately or I will take the matter to the next level ombudsman and consumer protection board...I await a speedy response from a senior person..