How Can Direct Marketing Lead to Customer Complaints?

Direct marketing can keep sending discount texts after an opt-out request, causing customers to complain when the messages do not stop.
The business must then find out why the request was missed and remove the number from all its text lists.
A customer may opt out by replying “STOP” or using the unsubscribe link in the message.
That request should automatically place the number on a do-not-text list.
Problems arise when an old contact list or scheduled campaign does not receive the update.
The customer then receives another discount message after already asking the business to stop.
The support team checks when the customer opted out and which campaign sent the later message.
The number is removed from the customer database, text service, and any messages already scheduled.
The business keeps the number on its do-not-text list so it is not added again later.