Someone owes me more than 10k and this person vanished for more than 3 years and recently emerged. I happened to acquire this person's current mobile number but without last 3 digits. I was planning to send out text messages from 001 - 999 asking for the payback. This message would be specifically addressed to this person with this person's name the owing amount. Would sending out text messages to a group of strangers get me into a legal trouble?