- Total posts: 2,523
If this is a 2-customer problem, then an apology, refund, and buy them a competitor’s product to the right specifications would likely make them happy customers (maybe even a positive review). Total cost likely $100-500 depending on what kind of headphones you sell.
If it’s not worth paying that much, then the problem is a sub-$500 one and therefore not worth any further worry.
Just an idea for a more creative solution.