Friend rings, i miss the call. I see the missed call, but no voicemail has been left. If i am not busy i will ring back as quick as i can, but if there is no message then i don't always ring back just as soon as i notice the missed call.
If they leave a message and it is obviously urgent i will drop whatever i am doing and ring back.
Its just a friend of mine gets huffy with me if i don't always return her calls, even when she hasn't left me any message. I'm like, if its that urgent and you need a response then leave a bloody message so that i know to ring you back straight away, otherwise just a missed call isn't necessarily going to be returned immediately.
She always goes did you not get my call? Why did you not ring me back?? In a very indignant sort of way, and i'm thinking to myself well i didn't realise it was so important/urgent of you would have left me a message!