Watch out for persistent, hostile texts that pop up out of nowhere. These messages often aim to intimidate or provoke a reaction, then disappear until they reappear with a feigned friendly gesture like a birthday wish. The pattern suggests a harassment campaign rather than a legitimate service. Block the number, report it to your carrier, and keep a log of timestamps and content. If the messages continue, consider filing a report with local law enforcement, especially if threats or defamation are involved. Stay cautious about any links or attachments they might send, and refrain from engaging to deny them the satisfaction of a response.
I got hostile texts accusing someone of saying nasty things about me, followed by a claim I reported them for alcoholism, then a bogus birthday wish. I never replied.
Received a barrage of random harsh messages for a day, then they ceased; later a birthday wish arrived on the wrong day, despite no interaction.