I only use top quality metal detectors, built to be durable, and top quality headphones to match.
The Troy Custom headphones, as stated, have about the strongest coiled cable and are very durable. I like them, but I like my Killer B Wasp and SunRay Pro Gold headphones better. These headphones are essentially the same (for good reason) and I have been using them for over half a dozen years without a problem.
Note, however, that I pamper my equipment and treat it as a sensitive electronic component ought to be treated..
in your case, I have now idea how you treat your headphones, but I do note that you said they were 2 years old. If you paid $80 you might have been a second (or third or fourth or ??) owner so there's no way to know how they were treated before you acquired them,.
Personally, I'll stick with my SunRay and KillerB headphones.
Monte