arizona98tj,
I would really be upset with Pro Ears if that happened to me, so sorry to hear about it happening to you!
I have hearing some damage also (tinnitus from the war) but although I can't scientifically measure that, I have not noticed any difference (additional damage to one ear or the other) since using Pro Ears.
I DID have a problem with them where one earcup seemed to drain its batteries even when OFF (one side was always dead after a few months of being turned OFF -- other ear was fine), but just recently Pro Ears finally just decided to replace both earcup's older model (2005 model Dimension 1 Pro Ears) circuit boards with current Predator 300 boards, so I hope it that one-side-going-dead-battery-thing no longer happens. Additionally, they gave me new/upgraded earcup pads/seals, new gray foam inserts inside the earcup and upgraded the headband, too. So now, the only thing that was original on my 2005 model Pro Ears earmuffs are the hard plastic cups/shells themselves.
And I agree, they seem really to care about Customer Service and everyone I dealt with there very recently (in the office and tech shop) were very pleasant to work with...and my muffs were fixed/returned to me extremely fast with NO charges of any kind, even shipping my muffs back TO them.
But I must admit I do not use them OFTEN -- I never intended to -- just when I go out shooting (which is rare) and the last time I wore them was when I had to qualify with my TX CHL gun at the gun range. The MAIN reason I bought them is for self-defense use (and I recommend electronic muffs to other gun-owners for THIS same reason): To locate (using the increased hearing gain) any intruders in my residence, AND to protect my ears from shooting a gun indoors...so most of the time they are on my nightstand. Still, when I DO use them, I do not notice any problems whatsoever.
The other electronic muffs described above (those in the same higher-end category as Pro Ears) seem to be good products, too. Consequently, I don't think you can go wrong buying any of the better quality muffs. I decided on Pro Ears back in 2005 and presently, see no compelling reason to look elsewhere.
-- John D.