It does work sometimes because people can ignore an email or phone call, but its harder to ignore a person standing in front of you.

As an example we were contacting a business abut something we offered that we knew they needed.

Emails and phonecalls always got the reply of: I have left a note for the owner and when he has time he will contact you.

After months of that, and us happening to be in their area, we just dropped in unnounanced and asked for the owner.

He engaged with us , asked lots of questions, asked for samples and info. As we were doing that the secretary realized who we were and said something like " oh I’ve been meaning to have you read their emails and setup a meeting" lol

Too late lady.