What must I do when a customer asks me to stop messaging them on WhatsApp?

Stop messaging them. WhatsApp's Business Policy requires you to respect all requests, on or off WhatsApp, to block, discontinue or opt out of communications.

• Stop offers and broadcasts to that customer straight away and note it in your records.
• Only contact people who gave you their number and agreed to receive messages from you.
• A customer who keeps getting messages they did not want may block or report you.
• You can still answer a message the customer sends you about an order they placed.