furious

I bought a Universal charger not even a month ago. Today( 02/11/19) the charger burst while i was using it. I then took it back to the Cash crusader store in Westwood mall straight away. I was asked to buy another cable , which i think is rather absurd. They told me that it might be due to my adapter or plug voltage , that caused it to burst. What irritates me most is that when i purchased the charger i was not asked all this information, and when i asked the manager today why wasn't i asked this, he told me that it was not their job to do so. So basically they just guess what products to give their customers as long as they get their money. I feel as if this whole situation could've been avoided if they just did their job properly. I am very much not happy with the service. Now i'm the one who has to suffer during my current exams because I now can't use my laptop to study. I really believe that i should be compensated. I honestly feel ****** by the store.