VFR on Top

2-The altitude you hold shall be 500 feet off the nearest thousand, you may
choose that altitude, but you must advise ATC of the altitude you choose and
are
holding. (Hardly "VFR", isn't it?!)

Steve,
Cleveland App wants me at 3000 when I come in over Lake Erie from the north. I
cancel IFR if I can and stay high. Do you mean that I can request ( and get)
VFR on Top and then stay high and still be IFR? Can they refuse and insist I
came down or cancel?

Chuck