I’ll have more in the comments

I ended my friendship(s) with 2 toxic friends (I’ll call them T & Z. I’ve mentioned T one or two times before).

So I’ve been friends with T (& E) for about a year now. Z joined my school at the start of this year and we let him join our friend group.
T & Z became close and just started hanging out with other kids and picking on me (calling me names, making fun of me, stealing my stuff, etc).
I finally had enough of their bullshit today after they stole my downball (a bouncy rubber tennis ball if you don’t know what it is) for the 50th and didn’t give it back even though I begged them and I even started crying (I was just fed up with their bullshit, anger issues didn’t help).

After I got it back with the help of E, us 2 sat down and started talking about how they’re shit friends, etc. (I even sorta vented to him about their behaviour).
I gave them my downball and said: “you know what? Keep it. I’ve had enough of your bullshit, and this downball and caused me nothing but trouble. F**k off your assholes” and walked away with E.
A few minutes later I saw T & Z walking around empty handed and assumed they threw it over the fence or on top of a roof.

And of course during the free period at the end of English they asked me “why aren’t you talking to us [nickname]?” and “Did we do something wrong [nickname]?”. The audacity those two idiots had.

I put up with jokes Abt me from my lunch group, but I ofc let it go by because I've had worse.