SignalFiber Connections provided defective product

I want to report a serious concern with SignalFiber Connections's product that I purchased on March 14, 1981 from your Flatleyside, Iowa store. The product has had my warranty claim denied unfairly despite being advertised as high quality. I've contacted customer service three times and spoken to Erich L., but my issue remains unresolved.

I want to report a serious concern with SignalFiber Connections's product that I purchased on March 14, 1981 from your Flatleyside, Iowa store. The product has had my warranty claim denied unfairly despite being advertised as high quality. I've contacted customer service three times and spoken to Erich L., but my issue remains unresolved.