said they were airmiles and I won 25,000 pts

This call does not originate from the Leduc/St. Albert number.  

Its what is known as a "spoof" and if you do respond to it in any fashion, which includes having your voicemail pick up, then the scammers, have confirmation that your number is valid.  What they will sometimes do is use your valid number, spoofed of course, to do a new dial-out to another province/state when the number they've been using becomes known on sites like this.

Some things to remember:  
If you don't recognize the area code - don't answer.
If you haven't actually bought a "lottery" ticket from a reputable organization such as a Children's Hospital or Cancer Research fund:  How can you have won anything?
Legitimate busness callers will always show up on your call display as the company name, and in this day and age of pesronal information privacy, being contacted directly by a business that you haven't initiated a "callback" from, is almost unheard of.

Not sure if I just made matters worse or not, I phoned the customer service number in ScubaNut's comment and asked the fellow to add me to the do not call list.  He was nice enough, said he would.  Huh.  Probably not that easy eh?

Female robot dialer left a message:

... (partially cut off) We are pleased to inform you that you are the winner of two hundred and fifty thousand rewards points (cut off)

Got mine in Spanish, translated to: "Since your a valuble AT&T customer we are happy to".......I hung up. Don't like recorded sales messages especially during dinner. 17:34 CDT

This call does not originate from the Leduc/St. Albert number.  Its what is known as a "spoof" and if you do respond to it in any fashion, which includes having your voicemail pick up, then the scammers, have confirmation that your number is valid.  What they will sometimes do is use your valid number, spoofed of course, to do a new dial-out to another province/state when the number they've been using becomes known on sites like this.Some things to remember:   If you don't recognize the area code - don't answer.If you haven't actually bought a "lottery" ticket from a reputable organization such as a Children's Hospital or Cancer Research fund:  How can you have won anything?Legitimate busness callers will always show up on your call display as the company name, and in this day and age of pesronal information privacy, being contacted directly by a business that you haven't initiated a "callback" from, is almost unheard of.