How to stop marketing texts
Reply STOP to the message you want to end. One word, in that thread, is the opt-out. You do not need to explain, and you do not need to click a link if you would rather not.
A legitimate marketing program has to honor STOP. On Entrance, that opt-out stays on the account, so a later campaign from the same account should not text the number again.
If the messages continue
Block the number on your phone. Then report the text to your carrier by forwarding it to 7726 (SPAM). Include the sender’s number when the forward asks for it.
You can also write the business, if the message named one, and tell them to remove you. Keep a copy of the STOP you already sent.
What does not take you off a text list
The National Do Not Call Registry covers telemarketing calls. Joining it does not unsubscribe you from a text program. STOP to that sender does.
Replying with a paragraph, or with “please remove me” to a short code that only listens for STOP, can fail. Send the keyword the message asked for. If it did not name one, STOP is still the word to send.
If you opted in on purpose and only wanted fewer messages, STOP ends the program rather than turning the volume down. That is the tool the carriers require. A business that wants a quieter option has to offer it themselves. The required one is stop.