calling back this number (226) 663-8231 the same day the call is received and number not in service ,
what is this ?

do not call back or will make police complaint,
this is ILLEGAL to use a telephone number like this ...

Illegal robocall about credit card phishing. It is not legal in Canada to make unsolicited calls when the person is on the do-not-call list, and even without the list it is not legal to make robocalls at all, unless it's charity or by a political party.
226 area code is in Ontario. Either there is a company in Ontario making these illegal calls, in which case someone could sue them theoretically, or, it's some sort of phone switch. Either way, the company providing this phone switch, if that's what happening, could be held liable.
It's sad that there are people that can make a buck through dirty work like this. Phishing for people's financial status information. Not that they're looking to actually steal, but to log you in a database as a person to sell products to, like alternative credit cards and debt control services and whatnot. These types of companies build databases and sell these databases. It's all very scummy.

I recieved a call from someone saying they had a special deal on lowering credit card interest for Visa and Mastercard. I'm sure. They claimed to be calling from Calgary and said they knew I had a Visa from Montreal . So I did tell them it was illegal to call me here in Canada because I was on the Do Not Call List. The caller had never heard of this list so I told him he could be subject to major fines when he is reported. I'll just put a block on my phone for this number and report them.April 9, 2012

Same thing here, called today, I hit "1" to talk to the operator and when I started to ask questions, I was told to "f*** off" and they hung up.They seem to be calling at random or they have a list of some sort.  My phone number isn't listed anywhere.

I got an automated call from them.  The area code is from Windsor Ontario - when I hit 1 to talk to a live rep and tell them I was on the do not call list I was told to F_@$ o$$.  Needless to say I will now be pursuing this with the administrators of the do not call list.  I wonder if windsor police would investigate this as a harassing phone call.  I did after all answer it on speaker phone with my 5 year old in the room.

I recieved a call from someone saying they had a special deal on lowering credit card interest for Visa and Mastercard. I'm sure. They claimed to be calling from Calgary and said they knew I had a Visa from Montreal . So I did tell them it was illegal to call me here in Canada because I was on the Do Not Call List. The caller had never heard of this list so I told him he could be subject to major fines when he is reported. I'll just put a block on my phone for this number and report them.
April 9, 2012

Judging by the number of current complaints about this number, this outfit has recently crawled out from beneath its rock and is busy annoying us all.  How many people are still willing to do business with annoying telemarketers? We've got to fight back!  . . .I never answer an unrecognized number and the caller gets one chance to leave a message. If they hang up on my answering machine, I block their number.I also block any calls coming in from "private number." My phone is MY phone.

I too got a call from this number telling me they can lower my intrest rate on my credit card but when I asked them what else they know about me that i was not aware of the man on the other phone hung up on me!  So much for curtesy....