I have been getting calls on my cell phone from these same area codes (410,303,614,blocked). I have been ignoring these numbers, but they actually left a message yesterday (for someone else) with a 1-800 call back number. I called back to tell them it, and actually talked to a rep who seemed reasonably nice. So hopefully the calls will stop, and this is not as "scammy" as some of the posts here indicate. (note; neither I nor anyone in my family has any debt). Also, after reading through the posts here, I called back all of the numbers I had been ignoring, and they were all valid World Financial numbers (no number spoofing).