I am getting up to 10 - 15 of these calls on my cell phone with a caller ID # of 000-000-0000. They do not leave a message. This started about a week ago with about 5 calls a day. Anyone ever get this ??? Who is this ??? Yesterday I answered one & he asked for Stewart & I said "do not call here again". Today I still got about 6 calls then I answered one & I said "who is this" & they just hung up. Thanks for any info you may have.