I'm still catching up on the long threads of some of you that have been here for a while (NYS, frank, et.al.), so I don't know the full sitch and feel funny even saying much of anything, but my first thought would be (putting myself into the same position), would be to call back, but with 0 expectactions. Not to play games or anything, but simply call back with an assumption that it might something "important", or at least something that needs to be discussed (taking care of business, routine, etc.), but nothing more.
Crow Jane, Crow Jane, come 'on, I wanna know,
how you love some man, but don't love me no mo'