A good site I found to help distinguish legitimate missed calls, etc is http://whocallsme.com/ Just enter the number to find out who it is and what they’ve been upto.
On a lighter note, do you like the notepad? Hehe, a bit of comedy to brighten up a hard day at work, when it’s the public calling you and making a nuisance. If you ever work in customer service, you will realise nothing pleases certain groups (usually middle-age women) than ringing up a number and blaming everything on the first person who answers. If you happen to be young, they will assume you are a student or on work experience and ask to speak to a manager. Who will then repeat everything you have just said.