If you still have the AT&T number active, I guess you could look into porting it to TMob
"Free" Unlocked 64GB iPhone 6, unlocked 32GB iPhone 5 (AWS), unlocked 16GB iPhone 4
Unlimited airtime, Unlimited CAN/US long distance, Unlimited SMS to CAN/US wireless numbers
2500 Call Forwarding minutes to CAN/US numbers
Google Voice for visual voice mail with message transcription, conditional greetings, unlimited messages (vs 35 message cap), remote retrieval from any PC or phone, no auto-purge after 10 days and most importantly no $7-$8 charge.