I've texted him I didn't want to hear from him anymore but should I have kept it open?

I am a firm believer in no means no, if a women tells me never to contact her again I delete her number and do exactly what she said. if I was important to her she wouldn't treat me that way. I'm not sure what you could do other then appologise or move on.

Don't do anything. If he's just playing with you, he definitely doesn't deserve you in any way but if he really like/love you, he'll realize your worth and will reach you as only yours. Wait and see, good for both of you and you can anytime(later) meet him and talk about how you both feel.
Good luck :)

I think that you should make up your mind if he is worth the trouble ! Women seem to make it a mission to change a guy into what they want. Some guys will play that to get what they want and after just move on or if the guy does change ,the woman gets board and moves on. Maybe the best thing for you is to sleep with him and get that mystery over with.

Just let things flow as how you created it.
Also, absence makes the heart grow fonder. The more you keep your distance from him and keeping the interactions low, he'll realize your true value and will be the one to first initiate contact.