Don't fall for a bogus call - even from the 'police'

One day, my landline phone rang at 8:04 am and a voice with a standard Beijing accent spoke.

"This is Tietong Telecommunication Company. You have 2,568 yuan due for payment on your phone bill. If you do not pay it today, we will disconnect your line. Any questions please press 9."

I pressed 9 and a female operator said I was not in debt because of my own landline but because of another phone in Shenzhen that was attached to mine.