Having been a support agent and an unofficial supervisor to other agents, one thing I know for certain is that these agents can do nothing about customer service issues. If you complain to them about the quality of the product or the service, then they can do very little to resolve that complaint. Neither are they trained to handle such situations properly, nor are they given permissions by their employer to do something about it. Next time, ask to speak to their supervisor. You'd do yourself a a huge favour.