I don't have any personal experience with them, but a few things I have heard over the years from others who have dealt with them:
-They tend to deal with funerals in the morning, so best to call in the afternoon (NY City time).
-Some of the workers are crankier than others, so if you get a bad one, try calling back another day.
-They will sometimes respond to requests with a bill for a large sum to get a list of everyone in the burial plot (which may run as much as $150-200, but could be helpful in research) or a gigantic bill for charges for upkeep of your ancestor's grave (which could be thousands of dollars and should not have to be paid.)
