This comany called but didn't identify itself; just asked "Is XXXX there?"

They didn't provide any information as to who they were but the Caller ID showed Gabriel Financial. Googling Gabriel Financial comes up as a mortgage company. Which also is interesting; our number is on the National Do Not Call Registry. I called the company and they confirmed that the number that showed up on Caller ID belonged to a 'Melinda' who works for their company. I also told them they are violating the law by calling a number that is on the Do Not Call Registry.