Business ProfileforFirst Alert

In November of 2023 I purchased 9 Onelink Hardwired smoke and CO detectors for a total of approximately $1000 from the First Alert Amazon store (sold by First Alert). I had 2 with dead batteries on delivery so I returned them to purchase replacements. Of the replacements I received in early December 2023, 1 had a dead battery on arrival. I called first alert support to troubleshoot the issue as I was concerned about the defective rate. First alert ignored the first case I opened. In January 2024 I called to get a response and a new case was opened. I was informed that the units are in fact discontinued and cannot be replaced. I was offered a $35 replacement or a refund. I opted for the refund and provided the requested documentation. I was informed it would take 8-12 weeks to receive my refund. At this point it was also too late to initiate a refund with Amazon due to the returns limitations on smoke detectors. In March 2024, after 8 weeks, I called to check the status and was informed my refund had not been sent for processing. I demanded immediate action and a call back. On the call back I was informed that I would not receive the full value of my purchase due to using account credits - actual cash value shown on the invoice - to partially pay for the unit. Now first alert has ceased all communication and is refusing any support or replacement for the single unit. I have 8 more of these completely unsupported and unreplaceable units that were supposed to have a multi-year warranty.