I have lost my cheque book, I had it 2 weeks ago when I filled out one for the avon lady lol! And since then I can't find it, and am worried it has fallen into the wrong hands. What do I do? It may well be in my house, but it may well not be too! I really do not know. How can I stop the cheques from working? If I call my bank, can they do anything? (I hate calling them because it takes 20 mins to get through, then after they try and force me into having a credit card or loan) help!