My story last October 4th:

I came to work a bit early kasi may meeting ako ng 10am. As the meeting started, may na-receive akong text from an unfamiliar number. It was a girl na inaaway ako! Tinatanong kung nag-enjoy daw ba ako sa aking girl na hammer. I dismissed the text as a prank and proceeded to delete it.

A few hours later and I was in my second meeting (around 12nn), I get another text message from the girl asking me again if I enjoyed my time with my new girl. Galit na galit at nagawa ko daw siyang ipagpalit sa pinsan nya. Syempre at this point eh medyo na-offend na ako. So as part of my politeness and to give the lady a clue that she had been texting the wrong number, I replied in Japanese.
Gomen kedo anta no iu koto wa ore ni kankei nai. Chigau ketai bango ni ukette totte mitai. Anta no ketai bango mo shiranai. Naraba, jama ni shinaide kudasai.
Its a somewhat polite reply telling her not to bother me.

True enough, the offensive messages stop. Ahahahahaha. Wala lang.