The summer has gotten very hot

I just purchased an up-to-date house and we moved in last week. It is a greater house than I am used to, and I care about every inch of it! The only issue the two of us are having is the AC unit. This house has two Heating, Ventilation as well as A/C systems, a single for the upstairs as well as a single for the downstairs. The units are still new, just being installed numerous weeks ago. We even have a fancy smart control unit for the downstairs. I have been home all month and I cannot get the house down to 77 degrees in the middle of the day. I live where it is hot and it’s currently summertime. I have been busy moving furniture around, clearing out boxes, as well as hanging up pictures. I seriously have been  working up a sweat, and the house is not helping! Now, it could be because the previous owners took all the blinds with them when they left. I am hoping that when our up-to-date blinds come in two weeks, that the house will be able to cool off in the middle of the day. Night time as well as afternoons are okay, in fact, I am wearing pants as well as a long-sleeved t-shirt because I am cold. But, in the middle of the day, I hear those units actually working as well as I know the vents can, and I know they are blowing cold air. I just don’t know why the house won’t cool down. My husband comes home from outside and he says it feels great. That’s only because he was just outside and 75 feels better than 95. I told him, I will wait until the blinds are installed but then if it doesn’t get better I want to get someone out here to check on things.

HVAC dealer