If you're still waiting for your service to start after porting your number(s), don't worry. This is often easily fixed with a simple power cycle by turning your phone's power off and on. If you're still without service there's a good chance the porting process is still underway.
In this case it's simply a matter of waiting for transfer to finish, which can depend on which provider you're transferring from.
To find out more about porting times, take a look at this article.