Can you please correct my sentences??

2.At work, I had to call someone. but somehow the number was wrong, some old angry man answered. So I politely said “oh I’m sorry, I think I calling the wrong number” and then hung up the phone.
but after a couple minutes, he called me back and yelled at me “why would you calling me? why you put the wrong number?” something like that.
So I apologized again. at the time, I was pretty angry as well. hopefully he got a lightning.
anyway I’m going on a serious diet.

At work I had to call someone, but, somehow, I risked the wrong number. Some angry old man answered and I politely said "oh, I'm sorry. I think I called the wrong number" and then (누가 전화를 끊었어요? 아쩌시는? 당시는?) I (or the old man, unclear) hung up the phone.
But, after a couple minutes, he called back and yelled at me: "Why would you call me? Why did you disked the wrong number?" and stuff like that.
So, I apologized again. At the time I was also pretty angry (이 "hopefully he got a l lighting" 이해 할 수 없어요...)
anyways, I'm now taking my diet seriously.