Temp in room

So for some reason my room gets really hot in the summer. It’s something to do with the insulation. My parents are aware of it but don’t really do anything about it. I always have 2 fans on (even in the winter because I love cold) but in the summer time my room get SO hot so I bought a Thermometer for my room and it reads 81° and it’s not even the hottest part of the day yet( yes the air conditioning is on and the rest of the house is around 70-75° it’s just my room that’s hot ). I tell them that and the just say stop you are over reacting and get mad. Like it’s really hard to sleep when it’s that warm. What should I do?