**** products not good quality

I bought a welding machine and angle grinder 2 days back and the grinder just show smoke then exploded. Went to game to atleast have it exchanged I am being told I need to wait 21 days so they can go try repair it. I am making buckler and I want to move into my house so why am I being told a lot of ****. When they took my money they didn't get stories why must j get stories now. Please take your belongings and refund me. I dint thi k j will ever go back to buy anything in this store. What a ****y service