Did I take the right path?

A broken relationship remains broken forever. For that reason you end with lots of insults and shouting so it is crystal clear that you can NEVER patch it up.

Why the hell would you ever want him back?

He's keeping contact because he is hedging his bets. If he finds someone who he likes better, he'll stop contacting you.

Do yourself a favor and block him so you can get past this and get over him. His contacting you all the time is preventing that from happening.

I agree. He walked out without the balls to man up and tell you the truth. Trust me, I was that man once. Men like us don't deserve a second chance absent a legitimate reason why he had to part ways. The fact he remains calling leads me to believe the other participants in this forum, he is keeping his options open. If you do decide to take him back, make sure THIS IS TRULY what you want. Once a cheater always a cheater. Sorry mates, but true. You are as faithfull as your opportunities. Either he is immature or just another player. Assuming the aforementioned, you will need therapy to address any co-dependency issues you might have. Just an observation.