You need to think carefully about this. Unless your ex had a specific reason for calling you, there is no justification for you to spend an hour on the phone chit-chatting with him. As you have discovered, this has only served to leave you feeling extremely confused.
You need to question his motives for calling. If he had rung to say that he was extremely sorry, didn't want to break up with you and could you meet up to discuss what had happened, then fair enough. That is logical. However, he didn't do that.
My advice would be not to contact him and to refrain from any further conversations that serve no useful purpose. You are still in a vulnerable state of mind and the last thing you need is to be kept dangling on a piece of string. This only gives you false hope.
Good luck with this.