Banned for self defense

I had nowhere else to spawn, so I got distracted for a little bit. I made sure I left 2 crates in the truck. It was 100% ready to go. I had just gotten out of the truck to go regroup with my squad when the grenade hit me. This wasn't an unprovoked teamkill. When is it ever okay to throw grenades at teammates?

I never heard when he allegedly asked me what I was doing. That's why I didn't reply. I didn't hear anything in local chat until I shot him. No apology, no explanation, nothing. I had no idea what was going on. All I saw was a team mate throwing grenades at me. How am I supposed to know what he's doing? I thought I was about to get killed. I saw the grenade in his hand at the moment I shot him.

I don't know what else you want to hear from me. I solemnly swear that I will never drop crates in main again. I will also let people teamkill me, and then report them instead of taking matters into my own hands. I wouldn't have shot him if I didn't think he was trying to kill me.