Needs employees
Did you purchase the AC system from Lowe's and have them come install it if so the installers are individual subcontractors so it is possible that they could have damaged drafted but all you have to do is refuse to sign the paperwork for release the last payment until your problem is resolved I know for a fact since the pandemic the customer service at Lowe's and Home Depot has slowed tremendously and it just seems like nobody cares but when you start holding back some of their money that will quickly get their attention
Go up there duhhh
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