After taking your $, they "dissapear" too. Like my case, I ask my agent to inform ex-owner to collect their letters, but few weeks already still no "shadow". So I had to crossed the letter n throw the letter into mail post myself.

Actually u can bring e letters to post office n tell them that u r the new owner. They will know what to do...

*evil. If I still received, I just open the letter and if got GOOD things, I will use it, else throw rubbish bin.

It's useless telling the agents, they're unable to remove you from the listing. I can understand how annoying it is because I experienced it when I helped my parents to post an ads for their property with my hp number and I'm still receiving enquiry calls after 5 mths. Most of them called to ask me so much questions which I mistaken them as potential buyers but they told me later that they're just updating their data. Data updated very often but I'm still receiving calls from agents?

Same as buying. Easier to buy but when decided to not buy, difficult to refund back $$$.