How can a bidder find my home phone number? - just had a call!??

I have literally listed my car for sale within the last 15 minutes.No sooner was it listed, I had a telephone call at home asking me 'what was wrong with the car' and offering me a stupidly low price??How can bidders/viewers see this personal info?? It is not on my listing anywhere? I am worried that they can see my address too!!!!

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Orignal From: How can a bidder find my home phone number? - just had a call!??