No. If I brought anything like this to HR they would give me a "there-there, its all ok, we understand your frustration, just keep track of the use, eat up the entitlements, and discipline when they have used up the FMLA allotment". Security would just look at me like I had 3 heads. While frustrated, I vent here. At work I have become rather zen in my acceptance.
There is really no upside for me to follow up on abuse. No number to call that I am aware of. If I were to put in the effort, time, and energy to track down fraudulant abuse of FMLA, and was successful, the abuser would get fired. That is not a plus for me, I don't want them fired, I want them to stop behaving in this manner. If I were to put in the energy, time and effort and fail to prove abuse, I could be severely disciplined up to termination for percieved retaliation. Why would I invest my time and energy?
Or to put in other terms:
If I were an investment broker and said "hey, give me a bunch of your money, I have this great investment that has absolutely no upside, no shot to give you any actual income, and a fair to even chance you will lose everything". How much money are you going to invest with me?