Hi werunbklynn,
This is not a heat issue. Do not waste any $ on addressing the heat (it's an engine compartment for God's sake--belts, especially racing belts, are designed for high temperature applications).
This is almost certainly a belt sizing issue and/or pulley issue.
I've been in your shoes and shredded or broken 3 belts now on my Vortech powered BRZ. I started with the 3.48" pulley then went down to the 2.87" pulley which I'm running now (and think I was running the 3.125" for a while too but I don't recall now). My single biggest issue was the stock TENSIONER PULLEY. My belts rode up over the raised edge of the tensioner pulley which cut an entire ribbon (the 6th rib) off of every belt I put on there. I didn't know what the problem was cuz I couldn't see the surface of the tensioner pulley as the belt rides over the top of it. I WOULD GET THIS PULLEY OFF YOUR CAR ASAP. Replace it with a Gates DriveAlign B/S Pulley #38018. It's $16 at O'Reilly's AutoParts. (A little cheaper than a vented hood, eh?)
I would strongly recommend replacing any pulley that has a raised edge on it like this one:
https://www.acklandsgrainger.com/ima...4MK68_AS01.JPG
with a same-size replacement with NO raised edge.
Second thing, you might be running too big of belt. See fitment chart below.
http://www.vortechsuperchargers.com/...SBeltGuide.jpg
The suggested belts are quite tight and can be a pain in the butt to get on if you don't have the tensioner pulley all the way released but they are correct.
Let me know if you need help with the install of any pulleys or taking off your supercharger. I've had to do this several times now and will walk you though it. It's pretty simple.
The biggest pain is removing the air intake box! lol