Excellent at Harrassing Paying Debtors

Am gobsmacked. I have a debit order paying an Edgars account that goes off every month without fail. I had forgotten to switch my cellphone on today and when I did tonight I had ten missed calls and two messages from ********** - "Urgent message for Fiona Mckay - Please call ********** ." The only reason that I now know who that I now know who the message was from is that I searched for the phone number online. Oh, and by the way, if you're going to leave me a message, why not actually say what it's about? Who in their right mind leaves 10 missed calls and two messages in one day? I assume that you're not very good debt collectors if you have to harrass people who are actually paying their instalment every month on time. I guess I'll phone her tomorrow and see what she wants. But can someone explain to me why I'm being singled out like this? Also, if I'm going to be chased like this for paying, why not save myself the hassle of paying at all?