How true is company listing on the internet really with regards to their premises ?

Decided to write this review as I was helping my mother in law look for a new place and drove around Centurion after I googled rental /property company's As I drove to the property of I Search Properties as I was in that general area only to find out from the garage attendants and other business around their offices that they have not been in that office for nearly 5 to 6 months maybe more , I generally rather meet people if possible that just deal with them over the phone if possible ...but advertising your business and premises on the internet and not having been in that building for more than 6 months sounds ***** to me