Dont worry about missing the call darling - I missed mine too and know exactly how you feel, it sucks, but remember that a call MEANS GOOD NEWS is on the horizon, even if it is just for more documents, it means you are being seirously considered for the job - well done!
I tried phoning them back and left a message on their voicemail... then called again and left another message, to no avail. In the end I was frantic, but they did return my call about a week and a half later to tell me I had got the job (pending medical of course).
So ... tentative congratulations to you !!
SHFG