I got this same call today and it was also from New Brunswick, Canada offering to reduce my credit card rate.  The number was (506) 221-4562.  They asked me to press 1 to speak with someone.  I then asked what credit company they were calling from, and they didn't really seem to know.  So I told them to never call hear again and to put me on the do not call list.  They promtly hung up on me before I could finish my sentence.  When I looked it up it said it was from a Rogers wireless.

Hung up on answering machine. I am on the national do not call list. I reported it to them also.

I answered and the line was silent. I stayed on for about 30 seconds, after hearing nothing I hung up

4/30/09 Left a message on my voicemail. I haven't listened to it yet, but I know it will probably be about credit cards rates. I dont have credit cards. I will report to National Do Not Call, too.