Game kicked me out of Match Now Im Banned

[evanstheo59]

Was playing a deadlock match and during the 6minute mark the game kicks me out, this ended up resulting in me not being able to rejoin and once the game ended i have now recieved a 5 hour ban. This is the first time this has happened to me, are these duration of bans this serious?

 

[Silverfox3]

I had the same situation, My PC froze on the game which caused me to need to reboot. I rejoined again and then it STILL gave me the penalites