Probably a spoofed number. Dunblane is a town in Scotland. If the one person called back and found out the number is no longer in service I would say another Internet phone based spoofed number. More crooks looking for easy money.

that doesnt make sense in my case.  i was the person calling my own home but instead of my cell # showing up on caller id like it should of, the dunblane name and number showed up in its place.  why would another suspicious # show up on caller id when i know i did not spoof anything and i know i was the one calling?

I just got a call from this number, they knew my name and wanted to verify my mailing address, which they already knew, when I ask them why they called, they told me that they were sending out my medical card

No one on the end of the line.  Number originates in Brooklyn, NY.   Registered to Dunblane Marketing. Company is not registered as an assumed business name or corporation in New York.

I want to know which cell phone service you are using

That is illegal and I am trying to track down which cell phone company uses this number 718 928 7928 because that is called spoofing and it carries a fine of 10,000 per occurrence