Verbal abuse of family

I have tried to help my son all his life and now in his late 20s on odd occasions he phones me shouting that if I had not helped him his life would be perfect. He swears and threatens me . This is usually after his bicycle has broken which happens every week for some reason. We did buy him a motor scooter a couple of years ago but he crashed it after two hours so we are not prepared to help him get one again and this is still a cause of verbal abuse and threats. Does anyone else suffer with these out bursts for their child it comes out of the blue when you really don’t expect it. I don’t know how to respond I am always worried he will do something silly.