I've been asked to bring my PC in because I'm not being believed that my PSU bought from Elara doesn't work with my PC. The PSU seems to work with the workshop rig in the warehouse. I can't do this because I work on it and I'm doing a course at the moment. I have in the meantime bought a replacement psu (modular - same make) and it works fine. I would like a refund for the one that doesn't work. Is this wrong?