Heating Problem!!

I have a problem with my heating system
It’s summer time and it’s getting really hot and i have no AC in my G2
The knob is on cold and defrost and recirculate… and all my vents are closed… the problem is every now and then I have like hot air surrounding the leg area in the front seats what i want to do… I was wondering if any other g2 guys out there have the same problem and how do i get rid of it… it makes me not want to drive it anymore… but hey! it’s a g2 haha i’ll drive it anyday!