If the device was stolen, unless you had set up an app or other software to allow you remote access to the device, and to back up anything you had on it, there is no way to get the info nor wipe the device. Most phones do not come with remote accessing/wiping software.
Alas, once it is gone, it is gone. They best you can do at this point (unless you had such software/app on the device) is to contact your carrier/service provider and have them cut the service to it so you don't get a huge bill. You can also report the theft to the police.
You also need to contact any companies that you accesses through your phone and change your passwords, etc., with them so that no one can access them. Banks, google, etc.
I would suggest that in...