I have a ban for 24 hours on competetive because my screen froze for 7 rounds

I wanted to train in unrated for competetive, so I booted up unrated. I picked killjoy and the game started loading. For 10 minutes I was stuck at the screen where you select your agen, and after the 10 minutes it loaded me in. How is it fair? I got banned for something that's not my fault.