Identical messages were left on my service for both 281-207-4857 and 281-207-4890. It was a recorded message for a meeting for our alternative high school in the area and that there was an information meeting .
Assuming that they are your parents (first) cousins, then they are your first cousins once removed. Their children will be your second cousins. If you are asking what to call them, then that depends. I always called my parents cousins aunty and uncle... unless they were like my age.
We are speaking here of cousins and removes as in 4th cousin twice removed. Everyone seems to know, even instinctively, that parents of a parent are their grandparents and the sibling of a parent is an uncle or aunt.