Cold calling HVAC leads for duct cleaning and getting trashed on reviews - how do you bounce back?

Been in the Chicago area my whole career, and cold outreach for seasonal duct cleanings has been my bread and butter, but damn, last month I called a neighborhood about Trane system maintenance and one pissed homeowner left a 1-star review on Google claiming I was a scammer. Now it's tanking my leads, even though I never even showed up. Saw a similar rant in the HVAC Techs Network group where guys were sharing scripts to smooth things over, and someone mentioned a Bryan Orr podcast that helped with reputation management. Tried responding politely to the review but it just made it worse. Anyone got tips on turning this crap around without looking desperate? FML.