Hi Deb,
I don’t know exactly what is going wrong. Booleans can be vey finnicky and can cause a lot of frustration (and are very hard to troubleshoot from screenshots).
Anyway, the holes should be easy enough to Fill.
Also, sometimes, the Knife Project Tool can be easier to work with than the Boolean Difference…but works best if you can cut from Axis Aligned, Orthographic Views.
