Honestly? No, if there had been no claim of a call to Jeremy, I'd have thought differently but the call (to me) makes it Jeremy or Sheila. Of course the story might have been an inspiration for what later occurred. I'm sure Jeremy knew about the incident?
My own " theory " on that would be that Jeremy,awakened by a call,half asleep,answered it and probably THOUGHT it was his father. Jeremy would have had the call alright, but it WASN'T his father. All Jeremy would have heard would have been the urgency of it as opposed to whether it was his father or not.
Jeremy was totally in the dark as to what was going on.
Phone was left off the hook at WHF" for effect " and to stop anyone from ringing,as Neville was in no position to phone anyone,besides there having been blood all over it,he was very likely already dead at the time.