MyRepChat is a powerful communication tool which gives you a new level of access to/from your clients.
Unfortunately, since some phone numbers are not private, there are spammers who are actively looking for numbers to call and also send messages.
The good news is that MyRepChat has a built-in BLOCK button. If you go to your MyRepChat Dashboard, click on Contacts, you will see your list of Contacts. Select the undesired contact from the contact list, AKA., someone you do not wish to hear from.
Next, you can scroll down to the "Block" section. Move the toggle that over so that it is filled in blue or 'On' and, click "Save" you will no longer receive communication from that contact.