sounds like a boot loop but the S3 is not stock 4.2.2 so you must have rooted therefore Telus won't support you. Your best bet is to head over to xda-developers.com where you'll get all the support you could ever imagine for free. Be sure to show your appreciation for the volunteers spending their time and effort helping you for the common good.
On the immediate side you should take the battery out and put it back in and try again.
