i just met with this incident too. it's haunting my whole family. any advise how to make them stop? we called them from the public phone. told them we are the new owners. the guy just told us to leave a number down. we refused. subsequently he say "you want you call police loh", we said "we already did", then he said "ok loh" and hung up the phone. apparently they aren't scare of the police..... help... anyone has any good advice?