How to deal with sending sms spam on behalf of the organization?

Question

SMS

A strange situation - several times people contacted who received SMS, where the name of the organization is indicated as the sender. The messages are very different, sometimes advertising food delivery, sometimes thanking for registration, sometimes confirming the order.
People google the name and call with questions - what other order? what kind of registration?

Who faced similar? How to stop it?

Answer 1

Get statements from a couple of callers with SMS facts and complain to the ops. Or ask them to complain.