Sears – Appliance repair (microwave) unresolved by sear home services (transformco)

I placed a repair claim for my LG microwave back in January 2024 (it was covered under our Master Protection Agreement #[protected]) and after many parts delivered and visits from technicians to install them, it's still not fixed. My service order number is [protected]. I was told back in March by a technician that he believed that parts were no longer available for this microwave (purchased in 2011) and that per the terms of our MPA, if on April 9, a technician did not show up to fix it, that I would be eligible for a replacement. It is now May (5 months since my initial claim) and it is still not fixed. I am caught in an endless loop of a non-existent part being ordered and never being sent - here's the latest one as of May 15, 2024: https://tools.usps.com/go/TrackConfirmAction?qtc_tLabels1=9434609105464108221142

I have worked extensively with the folks in Benefits to no avail. I have worked with D.T. , one of the Executive Member Support Case Managers under Case #138588 and am getting nowhere. I am doing everything possible to avoid taking legal action.