There can be more than one answer to this. He could have the ringer too low to hear it. He may be driving at the moment and is displaying responsible behavior and not getting anyone killed. He very well may be ignoring you and hitting the ignore call button. His cell phone battery may be dead. He may have lost his phone.
Because he has an ego and he is playing you. He is probably dancing in the mirror naked singing that song "a little bit of Jenny in my life, a little bit of Rhonda all night long" You sent him an interest signal, now if he doesn't respond don't waste another minute on him and show you're affections to somebody else who does not know you yet but is out somewhere looking for you.
If you don't want any contact with your ex, then it is fine to ignore her calls and text.
Ignore him and walk away.
Ignore the stupid her and get on with your life
If you're annoying him, stop. If you're not annoying him, ignore it.
Ignore her so she stops.
Tell them your pregnant or just stop going and ignore their calls
If they ignore you, avoid you, never answer your calls, always tries to get away from you.
they do that because there listening to their ringtone for you or they are just playing hard to get!
no, he will become aggravated and possibly break up with you
The only thing you can do is stay strong and try to ignore it.
Don't answer their calls, walk a way from them if you see them, and act like you don't hear them!!
just ignore them, but if it starts to get hurtful and really bad, tell someone.