I got a text message with a policeman's head on it.

In fact, anyone can go to the Housing Authority (or real estate trading center) to inquire about the information of the designated real estate. For example, before you buy or rent a property, you can check who the owner is, whether there is a loan, whether it has been frozen by the court and other details. Therefore, it is not difficult to find this information.

As for whether the caller is a policeman or a liar, you'd better go directly to the police station and ask. Because the phone he used to call may not really be the phone of the police station, you may still be asking the liar.