The Canada Revenue Agency does not accept or solicit iTunes gift cards as payment.

Apparently the scammers now ask for payments using iTunes gift cards, that they resell online using legitimate services.

If you receive a call instructing you to pay back taxes in gift cards, bitcoin, prepaid credit cards or prepaid debit cards, hang up and call 1-888-495-8501 from 8:30 a.m. to 5:00 p.m. Eastern time, Monday to Friday.