Best Fix Or Replace in Detroit MI

I've been forwarded to them through the 3rd party call center with a different name than this company and different feedbacks. Came a day later than scheduled (good that notified it the day before). They wanted to replace the whole AC unit because of its year (without any diagnosis or even opening it), until I insisted on doing its inspection first. Fixing done, but they're charging quite a lot.Update: I would change to 0 stars, as after a few hours after the technician left, the AC block stopped turning on at all.Update 2: changing to 2 stars because of them committing a 2nd time with a few delays, and operations keeping track of the appointments & records. Just reflecting my general impression on the experience and expectations.