Credit card scam.  They are seeking your Credit Card number and expiry date.

Called this number back and said "this number cannot be completed as dialed "

These losers call me EVERY day, it alternates between this number and an "Unknown name, Unknown number". 1st one, then the other. Sometimes it starts with a 1 in front, other times it doesn't. If you take away the 647 "area code", NO phone number starts with a 1. Definitely spoofing the number. I NEVER answer.

Blocked without answering since the number is fake. This is a credit card phishing scam based on the posts here.