Installed A/C unit at my house. Could not get hous...

Installed A/C unit at my house. Could not get house cold after running AC for two weeks straight. Tecs came out couple of times, stand in my hot house and tell me it's working fine. Called another co. for their opinion and they found the unit is too small for my house and my duct work in the attic (which was 130F) had not been insulated. So by the time the cold air made it to the end of my house it was coming out at 82F. Over $8,000 later and not at all happy. Oh packaging garbage, water bottles and two of my flashlights left in my attic. I guess that's my problem to clean up attic after them. Gotta say though if you have a contract they do come quickly and Frank my technician who came out was a very nice guy and helpful. If I needed to have my vents insulated at the time of installation I would have had it done. Out of work now (thanks covid) so I guess I will have to live with for now. Next review will be for their heating maintenance