Question

July 9, digital readout on my '98 Cadillac indicated low coolant & engine overheating. Towed to Cadillac dealership.   Advised engine failure ~ $12,000 replacement. Suggested I donate to charity. Truth now is nothing wrong w/engine. Skeptical neighbor went to Cadillac, added coolant & digital readouts disappeared. Drove car home. Certified mechanic test showed engine OK. Returned in August & requested backup proof for their obvious erroneous diagnosis. Per Svs Mgr, was based on their knowledge that an overheated engine MIGHT fail in the future? Now 3 months later & over 1,000 miles it runs perfectly. Initially they suggested I donate car & later that I buy a smaller car like a Toyota (which I did w/a loan). What they did was unconscionable and morally and ethically wrong. I am 78, widowed, major heart trouble (just out of hospital due to heart failure-stress, on fixed income and paying for an unnecessary purchase because of their incompetence. How should they help me? Tks