Need input: AC installer damaged copper lines, shoddy work

I tried and I could not reach the owner or boss at DirectAir, at least not yet. I called today to ask if the tech they sent was an employee or a subcontractor, the guy on the phone wasn't able to answer but didn't deny it could be a contractor either, he told me the boss wouldn't be available on the weekend, so I guess they don't consider my situation important or urgent enough as I assume the boss would be a phone call away. If the owner/boss cares about their deal with Costco they will make it right, otherwise Costco will give me my money back and if Costco and DirectAir both refuse to pay for the lines replacement I am preapred to sue them, got no problem with that. Not only that I will file complaints with BBB, the city and the state; let's see how they like that.

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