"when I tried to contact you on whatsapp to sort this matter, you abused me and blocked me"
I don't think thats the case , he apologized and said that he was joking . And had unblocked you.That's a very absurd way of taking things in . And the fact that you are calling him useless is inappropriate , i think you were the one who invited him to your clan , and you , yourself used to appreciate him and that's why you took him in. You used to hang out in voice with him. And him being inactive , yes he was inactive , he is my friend and we talk every other day , he had his exams going on and had a busy schedule. I don't see the point in you calling him useless or shit here.
You are basically creating inutile drama.