Invitation Homes review: Atiic insulation/hot bedrooms

2 years ago, they added insulation (fiberglass) in the attic. Didn't do the job. The left side of my house is always about 80 degrees till around 10-11 pm. I reached out last year around June because its so hot. The rest of the house is fine. It's just these 3 bedrooms. They have been out here multiple times in the past month, only for me to be told again its under review, or put in another work order. I have bronchitis, which doesn't work good with the heat in my bedroom. I already suffer with anxiety and depression, this is not helping me any. What am I supposed to do? Am at my wits end.