This isn't the right section to apply for unban, I guided you to do it the right way in discord but that's okay
You're banned on forums, so you're using your friend's account to apply for unban, that's not allowed but it's out of our discussion here, let's discuss about your ban
Doing 2 shots using sawn-off is quite easy, you're right but that's not what you were doing, you were doing like 8/10 shots, and that's no reload, either you have no reload or auto scroll (it fails, it doesn't work perfectly in-game, that's a stupid hack, and that's what happened to you, sometimes you shoot 6 shots before reloading)
I didn't have the time to install a game recorder, so I hurried up and used my camera phone, and it's clear enough as a bell that you were using cheats.
To sum up, even if you switch the guns after shooting 4 shots with sawn-off, once you switch back to sawns, it has to reload before shooting again, and that wasn't happening in your case
Here's the video I got. We don't ban anyone for no reason.
https://www.youtube.com/watch?v=6FECGr3CF0M