This is my work phone number. Some scammer has my number . They are pretending to be the "National Grant Office" and want all of your personal information for identity theft. I have filed a complaint with the FTC and FCC and I suggest you do the same. On the FTC's website, there is an alert about these types of calls. https://www.ftccomplaintassistant.gov/#&panel1-1
claimed to be US Government Grants. When I asked them to verify who they were they started to laugh and say that I was harassing them for not believing who they are.